The average time it takes Greg to mown a lawn can be defined by the expression 28x + 5

Answers

Answer 1

The number 28 represented by the equation A = 28x + 5 is the average time it takes to mow one lawn

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be = A

Now , the equation A is given as

A = 28x + 5

where x is the number of lawns to mow

Now , A is the average time required to mow a lawn

So , the number 28 is the average time required to mow a single lawn

Therefore , the number 28  average time it takes to mow one lawn

Hence , The number 28 represented by the equation A = 28x + 5 is the average time it takes to mow one lawn

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Related Questions

Is 3x 1/2 = 3 true or false?

Answers

Answer:

Step-by-step explanation:

true

Victoria deposited $5000 into a savings account that earns an annual simple interest rate of 0.3%. To the nearest tenth of a year, how long will it take for the account to reach $5500?

Answers

The account, will reach $5500 in 33.33 years. if Victoria deposits $5000 into a savings account.

What exactly is simple interest?

The direct crediting of cash flows associated to an investment or deposit is referred to as simple interest. Simple interest is a quick and straightforward way to calculate the interest amount on a loan. Simple interest is calculated by multiplying the daily interest rate by the principle by the number of days between payments.

The written formula is "Simple Interest = Principal x Interest Rate x Time." This is the most fundamental method of calculating interest.

Victoria deposited $5000 into a savings account with an annual basic interest rate of 0.3%.

Simple Interest Formula

A = P(1 + rt)

5500 = 5000(1 + 0.003t)

5500 = 5000 + 15t

15t = 500

The account will reach $5500 in 33.33 years.

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how much time should be allowed for a 605 mile card ship if the car will be traveling at an average speed of 55 mph

Answers

The time that the car will travel when the average speed is 55mph is 11 hours.

How to calculate the time?

Speed is the rate at which an object's location changes in a particular direction. The distance traveled on relation changes to a particular direction. The distance in relation to the time it took to travel the distance is the speed. It's a scalar quantity.

From the information, the car has an average speed of 55 mph and it's travelling at 605 miles.

It should be noted that time will be calculated as the distance divided by the speed that given and this will be:

Time = Distance / Speed

Time = 605 / 55

Time = 11

The time is 11 hours.

This simply illustrates the time.

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a sample of 60 information system managers had an average hourly income of $45.80 with a standard deviation of $7.00. what is the lower limit for the 95% confidence interval estimate for the average hourly wage of all information system managers? round your answer to two decimal places.

Answers

The lower limit for the 95%confidence interval for the given mean and standard deviation is equal to 39.03.

As given in the question,

Sample size 'n' = 60

Mean 'μ' = $40.80

Standard deviation 'σ' = $7.00

Using z-score table of normal distribution

z-value for 95%confidence interval = 1.96

Formula used

Confidence interval

= μ ± ( z-value × σ ) /√n

= 40.80 ±  (1.96 × 7)/√60

= 40.80 ± (13.72 /7.75)

= 40.80 ±1.770

Lower limit of the confidence interval is equal to :

40.80 - 1.770 = 39.03

Upper limit of the confidence interval is equal to :

40.80 + 1.770 = 42.57

Therefore, the lower limit for the 95% confidence interval is equal to 39.03.

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the area of a rectangle is 17.6 square centimeters. find the value of x when the length of the rectangle is x 2.3 and the width is x.

Answers

The width of the rectangle, x is 2.76 cm

Given,

The area of a rectangle = 17.6 square centimeters

Length of the rectangle = 2.3x

Width of the rectangle = x

We have to find the value of x.

Here,

Area of rectangle = length × width

Then,

17.6 = 2.3x × x

17.6 = 2.3x²

x² = 17.6/2.3

x² = 7.65

x = √7.65

x = 2.76

Now,

Width of the rectangle =  2.76 cm

Length of the rectangle = 2.76 × 2.3 = 6.35 cm

Therefore,

The value of x, that is the width of the rectangle is 2.76 cm

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Math

Omar opened a savings account and deposited $800.00. The account earns 6% interest,
compounded annually. If he wants to use the money to buy a new bicycle in 2 years, how
much will he be able to spend on the bike?
A
Round your answer to the nearest cent.
$
Recommendations

Answers

Answer:

898.88

Step-by-step explanation:

if you multiply 800 by 1.06, then multiply that answer by 1.06, you get 898.88

help guys can you help me

Answers

Answer:

Help guys can you help me

Four decimal numbers that have an even number in the tenths place, an odd number in the hundredths place, and a prime number in the thousandths place.

Answers

The decimal numbers that have an even number in the tenths place, an odd number in the hundredths place, and a prime number in the thousandths place include 0.237, 0.893, 0.475, and 0.652.

What is the definition of an even number?

An even number is any number that can be divided exactly by two. Even numbers always have a last digit of 0, 2, 4, 6, or 8. Even numbers include 2, 4, 6, 8, 10, 12, 14, and 16.

Odd numbers are those that cannot be divided evenly by two. It cannot be evenly divided into two separate integers. When we divide an odd number by 2, we get a remainder. Odd numbers include 1, 3, 5, 7, and so on.

A prime number is a natural number greater than one that cannot be calculated as the product of two smaller natural numbers. A composite number is a natural number greater than one that is not prime. 5 is prime, for example, because the only ways to write it as a product, 1 5 or 5 1, involve 5 itself.

A prime number is a whole number greater than one with only the number one and itself as factors. A factor is a whole number that can be divided into other numbers evenly.

In this case, 0.237, 0.893, 0.475, and 0.652 have an even number in the tenths place which is the first place after the decimal point. Also, there's an odd number in the hundredths place, and a prime number in the thousandths place.

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Complete question

Write four decimal numbers that have an even number in the tenths place, an odd number in the hundredths place, and a prime number in the thousandths place

The number 100 went into a machine (input), and
after an increase of 60%, a number came out
(output).
What number was output of the machine?

Answers

Answer:

outpot=160

Step-by-step explanation:

outpot= 100+ 100×0.6=160

a rectangle is 6 feet longer than it is wide. find the dimensions of the rectangle if its area is 253 sq-feet.

Answers

The rectangle's measurements are 13.2 feet wide by 19.2 feet long, giving it a total area of 253 square feet.

What is area?

The measurement that indicates the size of a region on a plane or curved surface is called area. Surface area refers to the area of an open surface or the border of a three-dimensional object, whereas the area of a plane region or plane area refers to the area of a form or planar lamina. Area is the entire amount of space occupied by a flat (2-D) surface or an object's form. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a shape on paper is the area that it occupies.

Here,

length of rectangle=l

width=w

l=w+6

area=l*w

253=(w+6)*w

w²+6w-253=0

w=13.2 feet

l=19.2 feet

The dimensions for the rectangle that have area as 253 sq-feet will be 13.2 feet as width and 19.2 feet as length.

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use a binomial model to calculate the probability that, in a random sample of 100 people, at least 6% of those in the sample believe the thing about reptilian people controlling our world.

Answers

The probability that  at least 6% of those in the sample believe the thing about reptilian people controlling our world is 0.0567

What is binomial probability distribution?

Probability of exactly x successes on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

According to the given question:

n = 100 random sample

p = 0.6 probability of success

P(X = x) = n to x pˣ(1-p)ⁿ⁻ˣ

P(X = 30) = 100 to 30 (0.6)³⁰(0.4)⁷⁰

               = 0.0567

Hence the probability that  at least 6% of those in the sample believe the thing about reptilian people controlling our world is 0.0567

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B) Find the measure of the indicated angle in each rhombus.

Answers

Answer:

  4) ∠J = ∠L = 88°; ∠K = 92°

  5) ∠P = ∠R = 34°; ∠S = 146°

  6) ∠T = 54°; ∠U = ∠W = 126°

Step-by-step explanation:

You want the remaining angles in each rhombus where one angle is specified.

Angle relations

In a rhombus, as in any parallelogram, opposite angles are congruent, and adjacent angles are supplementary.

Application

In each of the rhombi, the adjacent angle is supplementary:

  4) 180° -92° = 88°

  5) 180° -146° = 34°

  6) 180° -54° = 126°

Then the angle measures of interest are ...

  4) ∠J = ∠L = 88°; ∠K = 92°

  5) ∠P = ∠R = 34°; ∠S = 146°

  6) ∠T = 54°; ∠U = ∠W = 126°

Determine if the subset of R^2 consisting of vectors of the form [a b], where a + b = 1 is a subspace. Select true or false for each statement. This set is closed under scalar multiplications This set is a subspace This set is closed under vector addition The set contains the zero vector

Answers

If the subset of R^2 consisting of vectors of the form [a b], where a + b = 1 is a subspace. The statement: This set is closed under scalar multiplications This set is a subspace .This set is closed under vector addition The set contains the zero vector is False.

Vector:

A vector is a quantity or phenomenon that has two independent properties: magnitude and direction. The term also denotes the mathematical or geometrical representation of such a quantity.

Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight. A quantity or phenomenon that exhibits magnitude only, with no specific direction, is called a Scalar . Examples of scalars include speed, mass, electrical resistance, and hard-drive storage capacity.

Scalar Multiplication:

Scalar multiplication is the multiplication of a vector by a scalar (where the product is a vector), and is to be distinguished from inner product of two vectors (where the product is a scalar).

For quaternion scalars and matrices:

λ = 2     A = [tex]\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right][/tex]

2A = 2[tex]\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right][/tex]

     = [tex]\left[\begin{array}{ccc}2a&2b\\2c&2d\\\end{array}\right][/tex]  = [tex]\left[\begin{array}{ccc}a.2&b.2\\c.2&d.2\\\end{array}\right][/tex]

     = [tex]\left[\begin{array}{ccc}a&b\\c&d\\\end{array}\right][/tex] × 2 = A2

Subspace:

In mathematics, and more specifically in linear algebra, a linear subspace, also known as a vector subspace is a vector space that is a subset of some larger vector space. A linear subspace is usually simply called a subspace when the context serves to distinguish it from other types of subspaces.

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theo started watching a movie at 19:30 The movie was 1 hour 56 minutes long,but part-way through he paused it for 12 minutes what was the time the movie finished

Answers

Answer: 21:38 on a 24 hour clock and 9:38 on a 12 hour clock

Step-by-step explanation:

So if Theo started the movie at 7:30 and the movie was 1 hour 56 minutes, and he paused half way for 12 minutes, we can conclude that the total time taken to watch the movie/break was 2 hours and 8 minutes.

Now we just add that time

7:30 + 2 hours and 8 minutes = 9:38

On a 24 hour clock the answer would be 21:38

Hi I need some help! This is algebra work btw

Answers

The solution to the system of equation y = - 2x - 7 and 9x - 10y = 12 is,

x = - 2 and y = - 3.

What are the types of solutions for a system of linear equations?

If a system of equations only contains two linear equations with two variables, the system's equation can be graphed, the graph will have two straight lines, and the intersection point(s) of those lines will be the system's solution.

There are only three matching forms of solution for a given system of equations because there are only three different ways that two straight lines in the plane can graph.

Substitution in mathematics is when we replace some specific numerical values with variables according to our wants or given in the problem.

Given, Are two linear equations y = - 2x - 7 and 9x - 10y = 12.

Therefore,

9x - 10y = 12.

9x - 10(- 2x - 7) = 12.

9x + 20x + 70 = 12.

29x = - 58.

x = - 2 and hence y = - 2(-2) - 7 ⇒ y = - 3.

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answer quickly please!!!!!!!!

Answers

Answer:

56 in^2

Step-by-step explanation:

The formula for calculating area of a triangle is:

h × b ÷ 2 (h: height, b: base)

The height is 7t and base is 4t:

4t × 7t ÷ 2 = 14t

the value of t = 4 so replace x with 4:

4*14 = 56 in^2

If a scatterplot of standardized, bivariate data displays data that are mostly lying in the upper left and lower right-hand quadrants, then the Pearson correlation is typically going to be negative. True
False

Answers

If a scatterplot of standardized, bivariate data displays data that are mostly lying in the upper left and lower right-hand quadrants, then the Pearson correlation is typically going to be negative. The above statement is false.

Bivariate data:

Bivariate data involves studying and comparing two separate variables. For example, a researcher may record how long it takes people to complete a crossword puzzle while measuring the stress levels of the participants. In this example, the two variables that the researcher is examining are time and stress.

Scatterplots:

Scatterplots display these bivariate data sets and provide a visual representation of the relationship between variables. In a scatterplot, each point represents a paired measurement of two variables for a specific subject, and each subject is represented by one point on the scatterplot.

When the points on a scatterplot graph produce a lower-left-to-upper-right pattern, we say that there is a positive correlation between the two variables. This pattern means that when the score of one observation is high, we expect the score of the other observation to be high as well, and vice versa.

When the points on a scatterplot graph produce a upper-left-to-lower-right pattern, we say that there is a negative correlation between the two variables. This pattern means that when the score of one observation is high, we expect the score of the other observation to be low, and vice versa.

In statistics, the Pearson correlation coefficient ― also known as Pearson's r, the Pearson product-moment correlation coefficient (PPMCC), the bivariate correlation or colloquially simply as the correlation coefficient ― is a measure of linear correlation between two sets of data. It is the ratio between the covariance of two variables and the product of their standard deviations; thus, it is essentially a normalized measurement of the covariance, such that the result always has a value between −1 and 1. As with covariance itself, the measure can only reflect a linear correlation of variables, and ignores many other types of relationships or correlations. As a simple example, one would expect the age and height of a sample of teenagers from a high school to have a Pearson correlation coefficient significantly greater than 0, but less than 1 (as 1 would represent an unrealistically perfect correlation).

The Pearson correlation method is the most common method to use for numerical variables; it assigns a value between − 1 and 1, where 0 is no correlation, 1 is total positive correlation, and − 1 is total negative correlation. This is interpreted as follows: a correlation value of 0.7 between two variables would indicate that a significant and positive relationship exists between the two. A positive correlation signifies that if variable A goes up, then B will also go up, whereas if the value of the correlation is negative, then if A increases, B decreases.

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n this scenario, what is the test statistic? a business loan broker would like to test the claim that the average small business loan is different than 20 thousand dollars. sample size

Answers

The test statistic results for that scenario is -1.5.

How to calculate test statistic?

Simplified the calculation by eliminating thousands of dollars.

[tex]\bar x[/tex] = sample mean = 18.5

s = sample standard deviation = 5

n = sample size = 25

[tex]\mu_{0}[/tex] = population mean for the null hypothesis = 20

Since the question provide us a test statistic formula. So,

[tex]t_{0}[/tex] = [tex]\frac{\bar x - \mu_0}{\frac{s}{\sqrt{n}}}[/tex]

= [tex]\frac{18.5 - 20}{\frac{5}{\sqrt{25}}}[/tex]

= [tex]\frac{-1.5}{\frac{5}{5}}[/tex]

= -1.5 / 1

= -1.5

Thus, the result for test statistic in that scenario is -1.5.

Your question is incomplete, but most probably your full question was (image attached)

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a.write an equation to model the relationship
b.explain how you know if an equation or a graph represents a proportional relationship ​

Answers

Answer:

a) 12 · y = x

b) If the points show equivalent fractions and the line goes through (0,0)

Step-by-step explanation:

a1) divide any numbers from the x and y line (for example, 2 ÷ 24 would give us 12)

a2) This equation makes sense because any number from the x line (for example, 2) multiplied by 12 would give us the number from the y line (in this example, 24).

in how many ways can we arrange the face cards in a 52-card deck? (face cards are jack, king, queen) show your work.

Answers

By using the principle of counting, it can be calculated that

Total number of ways to arrange the four face cards in a 52-card deck =  11880

What is principle of counting?

Principle of counting states that if there are m ways to do one job and m ways to do another job after that job, there are m [tex]\times[/tex] n ways to do both the jobs together.

There are three face cards of hearts, three face cards of diamonds, three face card of clubs and three face cards of spade

Total number of face cards = 3 + 3 + 3 + 3 = 12

We can arrange the four face card in  [tex]{12 \choose 4}[/tex] ways = 495 ways

The four cards should be arranged in a row.

Number of choices for the first card = 4

Number of choices for the second card = 3

Number of choices for the third card = 2

Number of choices for the fourth card = 1

Total number of ways  to arrange the four cards in a row = 4 [tex]\times[/tex] 3 [tex]\times[/tex] 2 [tex]\times[/tex] 1 = 24

Total number of ways to arrange the four face cards in a 52-card deck =

495 [tex]\times[/tex] 24 = 11880

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given r(x)=x^3-4x^2+4x-6, find the value of r(2). what does your answer tell you about x-2 as a factor of r(x)?

Answers

The Value of r(2) is -6 and x-2 is not a factor of r(x).

What is the value of a function on a Variable?

A real-valued function of a real variable is a function that takes as input a real number, commonly represented by the variable x, for producing another real number, the value of the function, commonly denoted f(x).

What is Factor?

A factor of polynomial P(x) is any polynomial that divides evenly into P(x).

How to find out the value of r(x)?

Given  r(x)=x^3-4x^2+4x-6,

Put x = 2 ,

r(2)=2^3-4(2)^2+4(2)-6

r(2)=8-16+8-6

r(2)=-6

As we see that x=2 is not equal to zero,

implies x-2 does not divide r(x) evenly.

thus x-2 is not a factor of given r(x).

A restaurant decides to test their oven's thermostat to see if it is working properly, that is, if the actual temperature inside the oven is the same as the temperature to which the thermostat was set. Twenty times, the oven was set at 350 degrees and then the temperature was measured with a thermometer

Answers

The p-value when the test statistic is equal to 2.30 is 0.033.

What is the p-value?

A statistical measurement known as a p-value is employed to check a hypothesis' validity against actual data.

A p-value calculates the likelihood of getting the outcomes that were observed, presuming that the null hypothesis is correct.

The statistical significance of the difference that was found increases with decreasing p-value.

The p-value, used in null-hypothesis significance testing, represents the likelihood that the test findings will be at least as extreme as the result actually observed, assuming that the null hypothesis is true.

So, the p-value will be:

The t-value for (n-1 = 20-1 = 19) degrees of freedom serves as the test statistic in this experiment.

Using the formula: T.DIST.2T(2.3,19)

The p-value will be 0.033.

Therefore, the p-value when the test statistic is equal to 2.30 is 0.033.

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Complete question:

A restaurant decides to test their oven's thermostat to see if it is working properly, that is if the actual temperature inside the oven is the same as the temperature to which the thermostat was set. Twenty times, the oven was set to 350 degrees and then the temperature was measured with a thermometer.

H o: μ=350 and Ha: μ≠350

The test statistic is equal to 2.30. What is the p-value _____?

you intend to estimate a population mean with a confidence interval. you believe the population to have a normal distribution. your sample size is 15. find the critical value that corresponds to a confidence level of 90%. (report answer accurate to three decimal places with appropriate rounding.)

Answers

The critical value that corresponds to a confidence level of 90 % [1.34503037 , ∞ ).

Given:

you intend to estimate a population mean with a confidence interval. you believe the population to have a normal distribution. your sample size is 15. find the critical value that corresponds to a confidence level of 90%.

sample size n = 15

confidence interval ci = 90

we know that,

Degrees of freedom df = n - 1

here n = 15

df = n - 1

= 15 - 1

= 14

Using the graphical t value calculator:

with df = 14 significance level = 1 - 0.90 = 0.10

so t = [1.34503037 , ∞ )

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To explain that the expression 20m−60n+20 can be written as 20(m−3n), John first factors 20m as 20 ⋅ m and 60n as 20 ⋅ 3n, and leaves 20 unchanged. Then, he factors 20 from each term of the expression 20m−60n+20 and puts the remaining factors together within a pair of brackets.


• Explain why John’s reasoning is incorrect.


• Factor 20m−60n+20


• Explain how you found the answer.

Answers

The expression 20 m−60 n+20 can be written as 20(m−3 n +1).

What is the equation?

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

Given expression,

20 m−60 n+20

can be factorized as

20(m−3 n +1).

A) John’s reasoning is incorrect because he has not included the constant term in the expression.

B) 20 m−60 n+20 can be factorized as 20(m−3n +1).

C) The expression can be factorized by taking common from each and every term of the expression.

Therefore,The expression 20 m−60 n+20 can be written as 20(m−3 n +1).

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a student began his part ii titration with an air bubble in the buret tip. the bubble was released, unnoticed, at some point during the titration. briefly describe the error that the bubble would have caused in his titration results if: (a) the bubble had been released prior to the equivalence point of the titration. (b) the bubble had been released after the equivalence point.

Answers

Part a: The volume of such base would appear to be larger than it was if the bubble was already let go before the titration's equivalence point.

Part b: There would be no impact if the bubble had already been let go after the equivalent point.

Explain the term titration?A titration is a method for figuring out the concentration of an unidentified solution by using a solution with known concentration. Until the reaction is finished, the titrant (the known solution) is typically added from just a buret to a known volume of the analyte (this same unknown solution).

For the stated condition-

An air bubble was present in the buret tip as the student started his part II titration. Unnoticed bubble release occurred at some point in the titration.

The inaccuracy in his titration findings that the bubble would've have made if:

Part a: If the bubble had burst before the titration's equivalence point, the base's volume would have appeared larger than it originally was, having the base seem stronger than it is, and changing calculations.

Part b: There would be no impact if the bubble had already been let go after the equivalent point.

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In Wednesday 36%of the customer who bought at a gas station ñ.made additional purchase.there was 225 customers who bought doughnuts

Answers

There were a total of 625 customers who bought at a gas station on Wednesday

How to determine the total number of customers?

From the question, we have the following parameters that can be used in our computation:

Number of customers that purchase doughnuts = 225

Proportion of customers who made additional purchase = 36%

The above parameters mean that:

Proportion of customers who made additional purchase = 36% of The total number of customers

Using the above as a guide, we have the following equation

36% * The total number of customers = 225

Divide both sides by 36%

The total number of customers = 625

Hence, the total number of customers is 625

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a. Lin is using the diagram to prove the statement, "If a parallelogram has one
right angle, it is a rectangle." Given that EFGH is a parallelogram and angle
HEF is a right angle, write a statement that will help prove angle FGH is also
a right angle.
b. Han then states that the 2 triangles created by diagonal BG must be congruent.
Help Han write a proof that triangle EHG is congruent to triangle GFE.

Answers

The congruence of the angles and triangles are proven as follows;

a. The composition angles of FGH are alternate interior angles to the composition angles of angle AHEF

b. The three sides of triangle ∆EHG are congruent to the three sides of triangle ∆GFE, therefore, triangles ∆EHG and ∆GFE are congruent by SSS congruency rule

What are congruent triangles?

The lengths of the three sides of triangles that are congruent.

a. The shape of quadrilateral EFGH = A parallelogram

The measure of angle HEF = 90°

Angle HEF = 90°

Angle HEF = Angle HED + Angle DEF

Angle HED is congruent to angle FGD (Alternate interior angles theorem)

Angle HED = angle FGD

Angle DEF is congruent to angle DGH (Alternate interior angles theorem)

Angle DEF = angle DGH

Angle FGH = Angle FGD + Angle DGH

Angle FGH = Angle HED + Angle DEF (Substitution property)

Angle FGH = Angle HEF (Transitive property)

Angle FGH = Angle HEF = 90°

Therefore, the statement that will help prove angle FGH is also a right is that angle FGH is the sum of angles FGD and angle DGH which are alternate interior angles to angles HED and DEF which makes up angle HEF, which is a right angle.

b. The two-column method can be used to prove that triangle EHG and triangle GFE are congruent as follows;

Statement. Reason

EF is congruent to HG. Opposite sides of a parallelogram are congruent

EH is congruent FG Opposite sides of a parallelogram are congruent

EG is congruent to EG Reflexive property of congruency

∆EHG is cong. to ∆GFE SSS, Side-Side-Side, congruency rule

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Help please 17. G(9)+h(-14)

Answers

Answer:

15

Step-by-step explanation:

Given functions:

[tex]g(x)=14-\dfrac{2}{3}x[/tex]

[tex]h(x)=-x-7[/tex]

g(9) means to substitute x = 9 into function g(x):

[tex]\begin{aligned}\implies g(9)&=14-\dfrac{2}{3}(9)\\&=14-\dfrac{18}{3}\\&=14-6=8\end{aligned}[/tex]

h(-14) means to substitute x = -14 into function h(x).

[tex]\begin{aligned}\implies h(-14)&=-(-14)-7\\&=14-7\\&=7\end{aligned}[/tex]

Therefore:

[tex]\begin{aligned}\implies g(9)+h(-14)&=8+7\\&=15\end{aligned}[/tex]

As one calculation:

[tex]\begin{aligned}\implies g(9) + h(-14)&=\left(14-\dfrac{2}{3}(9)\right)+\left(-(-14)-7\right)\\&=\left(14-\dfrac{18}{3}\right)+\left(14-7\right)\\&=\left(14-6\right)+\left(14-7\right)\\&=8+7\\&=15\end{aligned}[/tex]

Slope of line that passes through (2,7) and (-4,19)

Answers

To calculate the slope of the line, we have that its points are A(x₁, y₁) and B(x₂,y₂), we apply the following formula:

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{\Delta y}{\Delta x} \iff m=\frac{y_2-y_1}{x_2-x_1} } \end{gathered}$}}[/tex]

To solve, we have that the points are:

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{A(x_1=\underbrace{2} \ \ , \ \ y_1=\overbrace{7} \ ) \ and \ B(x_2=\underbrace{-4} \ \ , \ \ y_2=\overbrace{19} } \end{gathered}$}}[/tex]

What we do to solve is that we substitute this data in the formula provided above.

 [tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\dfrac{y_2-y_1}{x_2-x_1} } \end{gathered}$}}[/tex]

 [tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{19-7}{-4-2} } \end{gathered}$}}[/tex]

 [tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{12}{-6}=-2 } \end{gathered}$}}[/tex]

The slope of the line that passes through (2,7) and (-4,19) is -2.

a rancher has 720 feet of fencing with which to enclose two adjacent rectangular corrals (see figure). what dimensions should be used so that the enclosed area will be a maximum?

Answers

The dimensions that need to be used so that the enclosed area of the two adjacent rectangular corrals will be maximum is 90 by 120 feet.

What do you mean by adjacent?

Adjacent refers to something that is close to or nearby. Your next-door neighbor is the person who lives in the home or apartment that is next to yours, even though you may consider the individuals who live up and down your street to be your neighbor.

Two things can be considered adjacent if they contact each other or share a wall or border. If two angles in geometry share a side and a vertex, they are said to be adjacent. In other words, neighbor angles do not overlap and are adjacent to each other immediately.

Solution Explained:

So according to the question, we get the equation

Perimeter is 4x + 3y = 720

⇒ x = 180 - [tex]\frac{3}{4}y[/tex]

Taking Area = 2xy

= 2(180 - [tex]\frac{3}{4} y[/tex])y

= 360y - [tex]\frac{3}{2} y^{2}[/tex]

Differentiating the function w.r.t y

A'(y) = 360-3y

Setting to 0

0 = 360 - 3y

⇒ y = 360 / 3 ⇒ 120

Now putting the value of y in

x =  [tex]180- \frac{3}{4} X 120[/tex]

x = 180 - 90 = 90

So, the dimensions are 90 by 120 feet.

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