The slope of the line that contains the points (17, -12) and (7, 8), is -2.
Calculating the slope of a line with given pointsFrom the question, we are to determine the slope of the line that contains the given points.
The given points are (17, -12) and (7, 8)
Using the formula for calculating slope,
m = (y₂ - y₁) / (x₂ - x₁)
Where m is the slope
Then,
The slope of the line is
m = (8 - (-12)) / (7 - 17)
m = (8 + 12) / (-10)
m = 20 / - 10
m = -2
Hence, the slope is -2
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which hypotheses can be used to perform the test in the following scenario? the mean startup time of two competing computers is to be compared to see if they are equal or not. eighteen startup times are randomly sampled from each computer. both populations have normal distributions with known standard deviation.
Hypothesis:
H0: The mean startup time for both computers is equal.
H1: The mean startup time for both computers is not equal.
A hypothesis is a potential explanation for a phenomenon.A hypothesis must be testable in order to be considered scientific according to the scientific method. Scientists typically base their scientific hypotheses on prior observations that cannot be adequately explained by the body of knowledge. Despite the fact that the terms "hypothesis" and "theory" are frequently used interchangeably, they are not the same thing. A working hypothesis is a theory that has been tentatively accepted and is put forth for further study after starting with an educated guess or idea.
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the process of reasoning from a premise or premises to a conclusion based on those premises is known as
The process of reasoning from a premise or premises to a conclusion based on those premises is known as deductive reasoning.
According to the question,
We have to find the name of the process of reasoning from a premise or premises to a conclusion based on those premises.
We know that there are two types of reasoning. One is inductive reasoning and the second one is deductive reasoning.
In deductive reasoning, we make a final statement which is often called conclusion from various statements which are given. For example, if we say 25th November is my birth date and today is my birth date then the conclusion is today is 25th November.
Hence, the process of reasoning from a premise or premises to a conclusion based on those premises is known as deductive reasoning.
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what is the probability that someone who tests positive has the genetic disease? (enter the value of the probability in decimal format and round the final answer to three decimal places.)
The probability that someone who tests positive has the genetic disease is 0.142
What is probability?
Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes, or how likely they are, whenever we are unsure of how an event will turn out. Statistics is the study of events subject to probability.
Let E be the people test positive
Let F be the people who has disease
P(F)= 1/10000 = 0.0001
P(E/F)= 99.5% = 0.995
P(E/F bar ) = 0.06 % = 0.0006
Baye's theorem:
P(F/E) = [ P(E/F) * P(F) ] / [ P(E/F) * P(F) + P(E/F bar ) * P( F bar ) ]
conditional probability :
P(B/A) = P ( A [tex]\cap[/tex] B ) / P(A)
Complement rule is given by:
P (F bar ) = 1 - P(F) = 1 - 0.0001 = 0.9999
The probability that someone who tests positive has the genetic disease :
P(F/E) = [ P(E/F) * P(F) ] / [ P(E/F) * P(F) + P(E/F bar ) * P( F bar ) ]
= ( 0.995 * 0.0001 ) / ( 0.995 * 0.0001 + 0.0006 *0.9999)
= 0.142
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If the area of the pentagon is 36, what is the area of the larger pentagon?
If the area of the pentagon is 36, then the area of the pentagon FGHIJ is 64.
What are Similar figures?Two figures are known as similar figures if there the corresponding angles are equal and the corresponding sider is in ratio. It is denoted by the symbol "~".
Given that the length of the side of the smaller pentagon is 12, while the length of the side of the larger pentagon is 16.
Since the two of the given figures are similar figures, therefore, we can write,
(Area of smaller pentagon)/(Area of larger pentagon) = (Ratio of the sides)²
(Area of pentagon ABCDE)/(Area of pentagon FGHIJ) = (AE / FJ)²
(36)/(Area of pentagon FGHIJ) = (12/16)²
Area of pentagon FGHIJ = 36 × (16/12)²
Area of pentagon FGHIJ = 36 × (256/144)
Area of pentagon FGHIJ = 64
Hence, the area of the pentagon FGHIJ is 64.
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in 1970, about 10 percent of the u.s. population was age 65 and older. what is the projected percentage for 2060
The projected percentage for 2060 is nearly double from 52 million in 2018 to 95 million by 2060.
Given in 1970, about 10 percent of the u.s. population was age 65 and older.
Demographic Shifts
The number of Americans ages 65 and older is projected to nearly double from 52 million in 2018 to 95 million by 2060, and the 65-and-older age group's share of the total population will rise from 16 percent to 23 percent. The older population is becoming more racially and ethnically diverse.
Hence the answer is the projected percentage for 2060 is nearly double from 52 million in 2018 to 95 million by 2060.
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1. Write a rule for g(x)=3f(x) + 1 when f(x) = x³ - 2x + 3.
2. Describe the graph if g as a transformation of the graph of f.
The equation of transformation in g(x ) is 3x³ - 6x + 8
what is transformation?
A point, line, or geometric object can be changed in four different ways that are all collectively referred to as transformations. The pre-image is the shape of the object as it was originally, and the transformed shape of the object is termed the image.
solution:
1. f(x) = x³ - 2x + 3.
Then g(x) = 3f(x) + 1
substitute f(x) in g(x)
g( x ) = 3 (x³ - 2x + 3) + 1
= 3x³ - 6x + 9 + 1
g( x ) = 3x³ - 6x + 8
2. The graph of the function f(x) = x³ - 2x + 3 is obtained by just moving the graph of g( x ) = 3x³ - 6x + 8 by 2 units up.
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Which pairs of triangles are similar? check all that apply. △abc ~ △def △def ~ △ghi △ghi ~ △abc △ghi ~ △jkl △jkl ~ △abc
The pairs of triangles that are similar are △jkl ~ △abc and their corresponding angles are congruent.
The fact that, When two triangles are comparable, their corresponding sides have a proportional ratio and their corresponding angles have a congruent relationship.
In this issue
△jkl ~ △abc
Because the proportion between its corresponding sides
Verify
CA/LJ=BC/KL
replace the specified values
14/7=20/10
2=2 >>>>> is correct
so
The proportion between the corresponding sides is linear.
therefore △jkl ~ △abc are similar.
Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.
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Answer: b & e
Step-by-step explanation: cuz
The horsepower (hp) that a shaft can safely transmit varies jointly with its speed (in revolutions per minute - rpm) and the cube of the diameter. if the shaft of a certain material 3 inches in diameter can transmit 45hp at 100 rpm, what must the diameter be in order to transmit 60hp at 150rpm?
The the diameter of the shaft is to be in order to transmit 60 hp at 150 rpm 1.88 inch.
Explain the term horsepower?Power is measured in hp, which is the standard abbreviation for horsepower. The rate of job completion can be used to describe power in this context. Most frequently, the term "horsepower" is used to describe an engine or motor's output.We must first obtain the formula for calculating horsepower.
The phrase to use is as follows:
hp = k × v × d³ ......eq(1)
Where:
hp is horsepowerv is speed (in rpm)d is diameterk is constant of horsepower.Since k is a constant, it will always have the same value when the shaft is transferring 60 horsepower at 150 rpm.
Therefore, using the first set of information, we can determine the value of k and subsequently the diameter.
When we solve for k in (1), we get:
k = hp / (v × d³)
Put the values;
k = 45 / (100 × 3³)
k = 0.02
Put the value of k and solve for diameter.
d = ∛hp / (k × v)
d = ∛60 / (150 × 0.06)
d = 1.88 inch
Thus, the the diameter of the shaft is to be in order to transmit 60 hp at 150 rpm 1.88 inch.
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4.) numbers is a game in which you bet $1 on any 3-digit number from 000 to 999. if your number comes up, you get $500. find the expected payback.
As the probabilities of random variables are negative so we can expect to lose roughly 50 cents on each $1.00 ticket we purchase.
How did the math game function?
The rules of the "numbers" game are simple: a player selects a three-digit number between 000 and 999. Anyone who picks the winning number receives a payout equal to 600 times their original wager. The winning number is decided by a publicly disclosed source. The majority of bets were for $1 or less, and frequently.
What does a probability arrangement mean?
A permutation is an arrangement (or ordering) of a collection of items. (We can also arrange only some of the objects in the set.) The arrangement of the objects in a permutation depends on their order.
The random variable-0.499/1000
The random variable "winning" are $1 and $600.
and their probabilities are 999/1000 and 1/1000, respectively.
The expected "winnings" are calculated as follows:
=(999/1000)(-1)+(1/1000)(500)
=-0.499/1000
=-0.499 cents
so we can expect to lose roughly 50 cents on each $1.00 ticket we purchase.
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explain why two lines through the origin that meet at a right angle can be considered orthogonal subspaces of r2 but two planes through the origin that meet at a right angle can not be considered orthogonal subspaces of r3.
There is a difference between orthogonal and orthogonal subspaces. According to this, two planes cannot be orthogonal in R3.
Considering, in the case of the orthogonal planes, each plane should have a basis of orthogonal vectors, and also, one of the pairs in each of the vector, is shared between the two planes and the other vector that is present, should form a orthogonal pair to each other.
Taking the case of orthogonal subspaces, the main requirement is that each vector of each of the pairs should be orthogonal to each vector of each of the other pair. Also, the dimension of the ambient pair should be not less than 4 (2+2).
When we talk about two planes in R3, planes are orthogonal if and only if, their normal vectors are orthogonal. If this condition is not present, then planes are not orthogonal in R3.
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PLEASE HELP ME I NEED TO ACE THIS ILL GIVE BRAINLY PLSSSSS
SS MEANS SCREENSHOT
What is the constant of proportionality in the table below?
fist ss*
Do the values in the table form a proportion? If so, what is the constant of proportionality?
second ss*
Which table shows a proportional relationship between x and y?
third ss*
The constant of proportionality of the given table is k = 2.
What are ratio and proportion?A ratio is a comparison between two similar quantities in simplest form.
Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.
In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.
We know the constant of proportionality between the variable x and y can be written as y = kx, where k is the constant of proportionality.
From the table when x = 2, y = 4.
∴ 4 = 2k.
k = 2.
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Please help me with this
-2 2/3 - (-1 3/5)
Answer:
The answer is -17/15
(Decimal: -4.733333)
the distribution of heights of adult american men is approximately normal with mean 69 inches and standard deviation 2.5 inches. what percent of men are between 64 and 66.5 inches tall?
By using normal distribution of probability, it can be calculated that
13.59 %of men are between 64 and 66.5 inches tall
What is normal distribution of probability?
Normal distribution of probability is a continuous type probability distribution whose probability density function is given by
f(x) = [tex]\frac{1}{\sigma \sqrt{2\pi}}e^{-\frac{z^2}{2}}[/tex] where z = [tex]\frac{x - \mu}{\sigma}[/tex]
[tex]\mu[/tex] is the mean and [tex]\sigma[/tex] is the standard deviation.
Here, normal distribution of probability is used
Mean = 69 inches
Standard deviation = 2.5 inches
P(64 < X < 66.5) = P(X <66.5) - P(X < 64)
For X < 64
z = [tex]\frac{64 - 69}{2.5}[/tex] = -2
P(X < 64) = P(z < -2) = 0.0228
For X < 66.5
z = [tex]\frac{66.5 - 69}{2.5}[/tex] = -1
P(X < 66.5) = P(z < -1) = 0.1587
P(64 < X < 66.5) = 0.1587 - 0.0228 = 0.1359
13.59 % men are between 64 and 66.5 inches tall
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what is the solution to the following equation
x2 + 3x + 7 = 0
Answer:
its C.
Step-by-step explanation:
Multiples of 3 and factors of 45??
Answer:
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, and 30
Factors of 45: 1, 3, 5, 9, 15, and 45
Step-by-step explanation:
if a researcher is using a one sample t statistic to test a null hypothesis about a population, what information is needed from the population to calculate the one sample t statistic?
If a researcher is using a one sample t statistic to test a null hypothesis about a population, he needs average, standard deviation and sample size to calculate the one sample t statistics.
What is t- Statistic test ?
Comparing the means of two groups is done statistically using a t test. It is frequently used in hypothesis testing to ascertain whether a method or treatment truly has an impact on the population of interest or whether two groups are distinct from one another.
Since the researcher wants to use one sample t statistic to test a null hypothesis about a population, the formula for t statistic will be followed which can be computed by using some figures which are the average, standard deviation and sample size to calculate the one sample t statistic.
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Weight
Weight
9. John mixed cashews and almonds.
Weight
John bought 4 pounds of almonds for a total cost of $22
The cost per pound for cashews is 60% more than the cost per
pound for almonds.
John bought enough cashews that, when he mixed them with the
almonds, the mixture had a value of $6.50 per pound
Approximately what percent of the mixture by weight was cashews?
Answer:
30%
Step-by-step explanation:
4 pounds of almonds is $22 --> 1 pound of almonds is $5.50
Cashew price per pound = 160/100 * $5.50. = $8.80
22 + 8.80x = 6.50(4+x)
22 + 8.80x = 26 + 6.50x
2.30x = 4
x = 1.739130435 approx 1.74 lbs of cashews
percent of the mixture, by weight, for cashews =
1.739130435 / (4 + 1.739130435) = 0.303030303 approx 30%
treatment treatment treatment a b c 32 44 33 30 43 36 30 44 35 26 46 36 32 48 40 sample mean 30 45 36 sample variance 6.00 4.00 6.50 a. at the level of significance, can we reject the null hypothesis that the means of the three treatments are equal? compute the values below (to decimal, if necessary). sum of squares, treatment 570 sum of squares, error 66 mean squares, treatment 285 mean squares, error 5.4 calculate the value of the test statistic (to decimals). 51.81818182 the -value is less than 0.01 what is your conclusion? conclude that not all treatment means are equal b. calculate the value of fisher's lsd (to decimals). 2.17881283 use fisher's lsd procedure to test whether there is a significant difference between the means for treatments a and b, treatments a and c, and treatments b and c. use . difference absolute value conclusion significant difference significant difference no significant difference c. use fisher's lsd procedure to develop a confidence interval estimate of the difference between the means of treatments a and b (to decimals). enter negative values as negative numbers.
The value is less than 0.01
What is Null hypothesis?
The null hypothesis is a common statistical theory that contends that there is no statistical relationship or significance between any two sets of observed data and measured phenomena for any given single observed variable.
Explanation:
[tex]Grand \ mean = \frac{30+45+36}{3} \\\\Grand \ mean = \frac{111}{3} \\\\Grand \ mean = 37[/tex]
TrSS = 5(30-37)²+5(45-37)²+5(36-37)²
TrSS = 570
SSE = (5-1)6²+(5-1)4²+(5-1)(6-5)²
SSE = 66
[tex]HST_{r} = SST_{s}[/tex]
according to given question p value is less than 0.00001 point. Therefore, The value is less than 0.01.
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hannah claims that -3 is not a rational number because it is not written as a ratio of integers. is she correct? explain why or why not
Answer: -3 is a rational number
Step-by-step explanation:
-3 is a rational number because it can be written as a fraction -3/1 and have the same value of -3. Therefore -3 is a rational number and Hannah is correct.
a page is to contain 24 square inches of print. the margins at top and bottom are 1.5 inches and 1 inch at the sides. find the most economical length (in inches) of the page.
The most economical length of the paper is 9 inches and width is 6 inches.
What is a derivative of a function?
The derivative of a function of a single variable at a chosen input value. It is the rate of change of a function with respect to a variable.
Let us consider,
Width of the printed part, in inches be 'x'
height of the printed part, in inches be 'y'
According to question,
Area of the printed part, in square inches = xy = 24
So,
y=24/x
width of the page, in inches = x + 2×1 = x+2
height of the page, in inches = y + 2×1.5 = y + 3
The area of the page (in square inches) is , A
= (x+2) (y+3)
= xy + 3x + 2y + 6
= 24 + 3x + 2y + 6
= 3x + 2y + 30
= 3x + 2×24/x + 30
= 3x + 48/x + 30
The minimum length can be found by calculating the derivative dA/dx, where A is the area of the paper
Solving the equation for dA/dx=0,
[tex] \frac{dA}{dx} = \frac{d(3x + \frac{48}{x} + 30)}{dx} [/tex]
[tex] \frac{dA}{dx} = 3 + \frac{48}{ {x}^{2} } [/tex]
[tex]\frac{dA}{dx} = 3 + \frac{48}{ {x}^{2} } = 0[/tex]
[tex]3 + \frac{48}{ {x}^{2} } = 0[/tex]
x = 4
then,
y = 24/4 = 6
The width and height of the paper are
x+2=4+2=6 and
y+3=6+3 =9
The dimensions of the page, so that the least amount of paper is used must be 6 inches wide by 9 inches tall.
Hence, the most economical length of the paper is 9 inches and the width is 6 inches.
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pls help! picture is below. pls help by pst sunday december 4 , 2022 12:00 p.m.
Answer: August 12th
Step-by-step explanation: 4 and 6 have common multiples of 2, so you need to multiply 6 by 2 and 4 by 3. Both get you 12, so the earliest they have tennis practice is the 12th of August (12 days after July 31st).
Answer:
August 12
Step-by-step explanation:
To solve this question, we need to find the Least Common Multiple (LCM) of 4 and 6.
Since we know that Nick and Mark both had practice on July 31st, we can simply add {LCM of 4 and 6} days to that date to get when they will next both have practice.
To find the LCM of 4 and 6, find the prime factorization of both:
[tex]4 = 2 \times 2[/tex] [tex]6 = 2 \times 3[/tex]
Now, take the largest quantity of each distinct prime number and multiply them together:
The largest number of 2's is 2. The largest number of 3's is 1. So, we multiply
[tex](2 \times 2) \times (1 \times 3)[/tex]
[tex]= 4 \times 3[/tex]
[tex]= 12[/tex]
Therefore, the LCM of 4 and 6 is 12.
This means that Nick and Mark will have practice on the same day in 12 days.
The last step to solve this problem is to add 12 days to July 31.
[tex]\textrm{July } 31 + 12 \textrm{ days} = \textrm{August } 12[/tex]
Nick and Mark will next have practice on the same day on August 12.
Are x=0 and y=3 perpendicular?
Answer:
Yes
Step-by-step explanation:
x = 0 is a vertical line. It's the y-axis.
y = 3 is a horizontal line.
x = 0 and y = 3 are perpendicular lines because they intersect
Answer:
Step-by-step explanation:
Yes, you can figure it out by drawing it out. Unfortunately, you can't compare slopes in this case as vertical lines are undefined.
please help me asap plssss
Answer: 9
Step-by-step explanation: The number of sides that a regular polygon has can be determined by the measure of one of its exterior angles. A regular polygon is a polygon with sides of equal length and angles of equal measure.
The measure of one exterior angle of a regular polygon is equal to 360° divided by the number of sides of the polygon. Therefore, if one exterior angle of a regular polygon measures 40°, we can use the following equation to find the number of sides of the polygon:
exterior angle measure = 360° / number of sides
40° = 360° / number of sides
number of sides = 360° / 40°
number of sides = 9
Therefore, a regular polygon with one exterior angle measuring 40° has 9 sides.
How much is 76 divided by 6?
Answer:
If you divide 76 by 6, you would get 12.6666667.
76 divided by 6 is equal to 12 and 2/3, or simply 12.67 when expressed as a decimal.
To divide 76 by 6, we perform the division operation to find the quotient.
When dividing, we start with the largest multiple of 6 that is less than or equal to 76, which is 72. We divide 72 by 6, which equals 12.
Next, we subtract the product of 6 and 12 from 76 to find the remainder:
76 - (6 x 12) = 76 - 72 = 4
Since there is still a remainder of 4, we can express the result as a mixed number: 12 and 4/6.
To simplify the mixed number, we can reduce the fraction. The greatest common divisor of 4 and 6 is 2, so we can divide both the numerator and denominator by 2:
4/2 ÷ 6/2 = 2/3
Therefore, 76 divided by 6 is equal to 12 and 2/3, or simply 12.67 when expressed as a decimal.
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14.95x4.1
HELPPPPPP
me please i need helppp
Answer:
down below
Step-by-step explanation:
Assuming you meant multiplying:
61.295
Hope this helps! :)
the probability distribution function for the discrete random variable where x is equal to the number of red lights drivers typically run in a year is as follows. x 0 1 2 3 p(x) 0.72 0.11 0.02 (a) fill in the missing probability. x 0 1 2 3 p(x) 0.72 0.11 0.02 0.15 correct: your answer is correct. (b) what is the mean of this discrete random variable?
(a) The value of p(x) is 0.15 when x = 3.
(b) The mean of the discrete random variable is 0.1
What is meaning of discrete random variable?
A discrete random variable has a countable number of different possible values, such as 0,1,2,3,4, etc. Usually, but not always, discrete random variables are counts. A random variable is discrete if it can only take a finite number of different values.
Given table is
X 0 1 2 3
P(x) 0.72 0.11 0.02
The sum of the probability of an event is 1.
Therefore
P(0) + P(1) + P(2) + P(3) = 1
Putting the value of P(0), P(1), P(2)
0.72 + 0.11 + 0.02 + P(3) = 1
0.85 + P(3) = 1
P(3) = 1- 0.85
P(3) = 0 .15
The mean of the discreate random variable is Σ xp(x) / Σ x
=[(0 × P(0)) + (1 × P(1)) + (2 × P(2)) + (3 × P(3))]/(0 + 1 + 2 + 3)
= (0 + 0.11 + 0.04 + 0.45) / 6
= 0 .1
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y-2/3x =-6 what does y equal.
Answer:
Solve for Y
by simplifying both sides of the equation, then isolating the variable.
Hope this helped
Step-by-step explanation:
The answer would be: y=-18x+2
At higher altitudes, water boils at lower temperatures. This relationship between altitude and boiling point is linear. At an altitude of 1000 feet, water boils at 210 °F. At an altitude of 3000 feet, water boils at 206 °F. Use an equation in point-slope form to find the boiling point of water at an altitude of 6000 feet.
Answer: Water at sea level boils at a temperature of 212 degrees Fahrenheit. For every increase in altitude of 1000 feet, the boiling point drops by 1.8 degrees. Write a linear function that gives the boiling point of water as a function of the altitude. What is the boiling point of water at 15,000 feet?
Draw a chart with the column heading as follows
Step-by-step explanation:
need help as quickly as possible
The measure of the unknown angles in the kite are as follows;
x = 66 degreesy = 158 degreesHow to find the measure of a kite?A kite has two pairs of adjacent equal sides.
In other words, a kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.
One pair of opposite angles is equal. Diagonals are perpendicular to each other.
A kite has four interior angles and the sum of these interior angles is 360°
Therefore, the measures of the
x = 66 degrees.
Let's find y.
y = 360 - 70 - 66 - 66
y = 158 degrees.
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Wyatt buys eggs and onions at the store. • He pays a total of $20. • He pays $2.52 for the eggs. • He buys 4 bags of onions that each cost the same amount. Wrote an equation that could be used to represent the context of X represents how much each bag of onions costs?
Answer:
X=437 over 100
Step-by-step explanation: