After adding the two equations to eliminate x you are left with 4y=-8. Solve for y: y =

If ratio of a to b is constant, and a = 9 when b = 6 then value of b is 4/3 when a is 2.

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Given,

The ratio of a to b is constant,

a = 9 when b = 6.

We need to find value of b when a=2.

Let us consider the value be x.

Let us form an equation

9/6=2/x

Apply cross multiplication

9x=12

Divide both sides by 9

x=12/9=4/3

Hence, if ratio of a to b is constant, and a = 9 when b = 6 then value of b is 4/3 when a is 2.

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The Range and Domain for the apples as per the given information is (1, 20) and (1, 20).

The difference between the greatest and lowest values of a set of integers is defined as its range. To find it, subtract the distribution's lowest number from its highest.

Because the term "range" can have multiple meanings, it is recommended that it be defined the first time it is used in a textbook or article. When older books use the term "range," they usually indicate what is currently known as the codomain. More recent works, if they use the phrase "range," usually use it to refer to what is now known as the picture. A number of current books avoid using the word "range" entirely to avoid confusion.

Given,

We need to spend $20 for each apple

And also given that,

The cost of each apple is $1

Here the independent variables are apples

Range=(1, 20)

Domain=(1, 20)

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Answer: No solution

Step-by-step explanation:

Since both equations are equal to y you can set them equal to each other

5x+4=5x-2

0=-6

zero does not equal -6 which is that there is no solution.

Answer:

Step-by-step explanation:

the answer is 2 1/2 miles

Midpoint of the line segment from (1,-3) to(-5,2) is (-2,-1/2).

A straight line is just a line with no curves. So, a line that extends to both sides to infinity and has no curves is called a straight line.

The midpoint of a line segment is a point that lies exactly halfway between two points

The formula for midpoint (x,y)=(x₁+x₂/2,y₁+y₂/2)

We need to find midpoint of the line segment from (1,-3) to(-5,2)

Midpoint=(1-5/2,-3+2/2)

=(-4/2, -1/2)

=(-2,-1/2)

Hence, midpoint of the line segment from (1,-3) to(-5,2) is (-2,-1/2).

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The equation of the line that is parallel to the line y = 1/2x + 2 is: y = 1/2x + 5/2.

Recall that if two lines are parallel, they will have the same slope (m).

Slope of a line (m) = change in y / change in x.

The slope (m) of the equation, y = 1/2x + 2, that represents a line is 1/2.

This means that the line that is parallel to it will also have a slope (m) that is equal to 1/2.

Find the y-intercept by substituting m = 1/2 and (x, y) = (1, 3) into y = mx + b:

3 = 1/2(1) + b

3 = 1/2 + b

3 - 1/2 = b

5/2 = b

b = 5/2

To write the equation of the parallel line, substitute m = 1/2 and b = 5/2 into y = mx + b:

y = 1/2x + 5/2.

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Answer:

x = 3y/4 + 17/4 and

x = 5y/2 + 5/2

Step-by-step explanation:

hope this help

If a,b,c are positive real numbers, the inequality [tex]\frac{(a+b)^{2} }{c} +\frac{c^{2} }a[/tex] [tex]\geq 4b[/tex] is not correct because it gives the value a³+2a²b+ab²≥4abc

How to find the solution set of an inequality?

Inequality is a mathematical statement showing that two quantities are not equal.

The given inequality is [tex]\frac{(a+b)^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex][tex]\geq[/tex]4abc

Simplifying the inequality we have [tex]\frac{(a+b)(a+b)}{c}[/tex] +[tex]\frac{c^{2} }{a }[/tex] [tex]\geq[/tex]4b

This implies that: [tex]\frac{a^{2}+ab+ab+b^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex] [tex]\geq[/tex] 4b

Taking the LCM,

[tex]\frac{a^{2}+2ab+b^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex] [tex]\geq[/tex]4b

Simplifying further

[tex]\frac{a^{3}+2a^{2}b+ab^{2}+c^{3} }{ac}[/tex] [tex]\geq[/tex]4b

The expression gives that: a³+2a²b+ab²≥4abc

Comparing the values of a,b,c on both sides of the inequality,  the inequality is wrong.

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The required property justifies the step is an addition property of equality.

What is mathematical property?

The rules governing how numbers relate to and interact with one another are known as mathematical properties. There are four fundamental properties. i.e. distributive, addition, commutative and subtraction.

Given, 2x +3 = -5x -1

Applying addition property of equality,

Adding 5x to both sides, we get

7x + 3 = -1

Hence, the required property justifies the step is an addition property of equality.

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Answer:

check the attached file

Step-by-step explanation:

Answer: 80

Step-by-step explanation:

⇒  −(8 − 12) + 60 + (−4)²

⇒ -(-4) + 60 + 16

⇒ 4 + 60 + 16

⇒ 80

Answer:

796.2 million

(796,200,000)

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{9 cm}\underline{General form of an Exponential Function with base $e$}\\\\$y=ae^{kx}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value ($y$-intercept). \\ \phantom{ww}$\bullet$ $e$ is Euler's number. \\ \phantom{ww}$\bullet$ $k$ is some constant.\\\end{minipage}}[/tex]

Given exponential function:

[tex]A=796.2e^{0.006t}[/tex]

where:

The initial value is 796.2, which means the population of the country in 2003 was 796.2 million.

Hence, the fractuon of the animals at the zoo are elephants is [tex]\frac{7}{12}[/tex].

What is the fraction?

A fraction defined as the part of the whole thing.

Fractions help to distribute and judge the numbers easily and make the calculation faster.

Here given that,

At the zoo [tex]\frac{1}{3}[/tex] of the animals are mammals [tex]\frac{1}4}[/tex] of the mammals are elephants.

So, the fraction of the animals at the zoo are elephants is

[tex]\frac{1}3}+\frac{1}{4}=\frac{4+3}{12}\\\\=\frac{7}{12}[/tex]

Hence, the fractuon of the animals at the zoo are elephants is [tex]\frac{7}{12}[/tex].

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The values of the composite functions are

(r * q)(5) = 96

(q * r)(5) = 96

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

q(x) = x² + 7

r(x) = √(x + 4)

The composite functions are given as

(r * q)(5) and (q * r)(5)

The base functions of the above composite functions are

(r * q)(x) and (q * r)(x)

And they are calculated using

(r * q)(x) = r(x) * q(x)

(q * r)(x) = q(x) * r(x)

Substitute the known values in the above equations

So, we have the following equations

(r * q)(x) = (x² + 7) * (√(x + 4))

(q * r)(x) = (√(x + 4)) * (x² + 7)

Substitute 5 for x

(r * q)(5) = (5² + 7) * (√(5 + 4))

(q * r)(5) = (√(5 + 4)) * (5² + 7)

Evaluate the equations

(r * q)(5) = 96

(q * r)(5) = 96

Hence, the solution of the composite functions is 96

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Answer:

#1. -6/7

#2. -3.2

Step-by-step explanation:

#1. (-2/7) + (-4/7)

You are adding two negative numbers.

When you add two positive numbers or two negative numbers, just ignore the signs and add the numbers as positive numbers. Then the answer has the same sign as the original numbers.

Step 1. Ignore the signs and make both numbers positive.

Add 2/7 and 4/7.

2/7 + 4/7 = 6/7

Step 2. Since the two numbers are originally negative, the answer is negative.

(-2/7) + (-4/7) = -6/7

#2. 5.4 + (-8.6)

When you add a positive number and a negative number, first make both numbers positive. Then, subtract the smaller positive number from the larger positive number. Finally, the answer has the same sign as the original number that corresponds to the larger positive number.

Here we do it step by step.

5.4 + (-8.6)

Step 1. Make both numbers positive. The numbers now are:

5.4 and 8.6

Step 2. Subtract the smaller positive number from the larger positive number.

8.6 - 5.4 = 3.2

Now look at the two positive numbers. 5.4 and 8.6. The larger number is 8.6. The original number that 8.6 came from is -8.6, a negative number, so the answer is negative.

5.4 + (-8.6) = -3.2

The simple form of all the expressions are:

-3 + 4m + (-7) - 6m = -2m -10

6x + (-1) - 3x + 12 = 3x + 11

3xy +2z - 16 + 6xy = 9xy +2z - 16

-4x - 8 + 2x + (-3) - 5x = -7x - 11

3m² - m + 7 + 3m² + 1 = 6m² - m + 8.

What is the simple form of the polynomial?

f(x) = anxn + anxn+1 +... + a2x2 + a1x + a0 is the formula for a polynomial. The greatest power of x in an expression is the polynomial's degree. Polynomials of degree 0, 1, 2, 3, and 4 are constant (non-zero) polynomials, linear polynomials, quadratics, cubics, and quartics, respectively.

We have,

-3 + 4m + (-7) - 6m

6x + (-1) - 3x + 12

3xy +2z - 16 + 6xy

-4x - 8 + 2x + (-3) - 5x

3m² - m + 7 + 3m² + 1

The simple form of the expressions:

-3 + 4m + (-7) - 6m

= -2m -10

6x + (-1) - 3x + 12

= 3x + 11

3xy +2z - 16 + 6xy

= 9xy +2z - 16

-4x - 8 + 2x + (-3) - 5x

= -7x - 11

3m² - m + 7 + 3m² + 1

= 6m² - m + 8

Hence, the simple form of all the expressions are:

-3 + 4m + (-7) - 6m = -2m -10

6x + (-1) - 3x + 12 = 3x + 11

3xy +2z - 16 + 6xy = 9xy +2z - 16

-4x - 8 + 2x + (-3) - 5x = -7x - 11

3m² - m + 7 + 3m² + 1 = 6m² - m + 8

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Answer:

9x + 6

Step-by-step explanation:

SOLUTION GIVEN: a number is divided by 9 and the remainder is 6,

TO DETERMINE: The remainder when six times the number is divided by 9

EVALUATION: Here it is given that the number is divided by 9 & the remainder is 6

We know that Dividend = Divisor × Quotient + Remainder 

By the given Divisor = 9

Remainder = 6

Let quotient = x

Then the number = Dividend = 9x + 6

Answer:

h = 4.5

Step-by-step explanation:

16.5 + 2.75h = 9h + 7.5 − 4.25h

Combine like terms on the right side.

16.5 + 2.75h = 4.75h + 7.5

Subtract 4.75 h from both sides.

16.5 - 2h = 7.5

Subtract 16.5 from both sides.

-2h = -9

Divide both sides by -2.

h = 4.5

Answer:

h = 1.2

Step-by-step explanation:

1.) Isolate the variable H. To isolate the variable H, you have to move numbers onto one side and variable onto another. I will show this process in the next steps:
2.) First, move the numbers onto one side. You will subtract 7.5 on both sides, ending up with 16.5 - 7.5 + 2.75h = 9h - 4.25h.

3.) Now, move the variable to one side. You will subtract 2.75h on both sides, and get 16.5 - 7.5 = 9h - 4.25h + 2.75h.

4.) Finally, Simplify. 16.5 - 7.5 = 9. 9h - 4.25h + 2.75h = 7.5h. Therefore, 7.5h = 9.
5.) If we divide both sides by 7.5, we get h = 9/7.5, which is 1.2. By this, h = 1.2

Using the formula of simple interest, the total interest paid on a $20000 loan at rate of 2% over 4 years is $1600

Simple interest is calculated with the following formula: S.I. = P × R × T, where P = Principal, R = Rate of Interest in % per annum, and T = Time, usually calculated as the number of years. The rate of interest is in percentage r% and is to be written as r/100.

The formula is given S.I = P(1 + RT)

Data;

S.I = 20000(1 + 0.02 * 4)

S.I = 21600

The total interest paid is 21600 - 20000 = 1600

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Answer:

The table in the attached figure N 1

The graph in the attached figure n 2

Step-by-step explanation:

we have

x+2=y

we know that

To graph a linear equation the best way is plot the intercepts

Find the y-intercept

The y-intercept is the value of y when the value of x is equal to zero

For x=0

0+2=y

y=2

The y-intercept is the point (0,2)

Find the x-intercept

The x-intercept is the value of x when the value of y is equal to zero

For y=0

x+2=0

x=-2

The x-intercept is the point (-2,0)

Find additional points to create a table (is not necessary for plot the line)

For x=1

1+2=y

y=3

For x=2

2+2=y

y=4

The table in the attached figure N 1

Graph the linear equation ------> plot the intercepts a joined the points

see the attached figure N 2

There are 300 students at Josefa Espinoza School.

reported viral illnesses very ... so the

in charge of the health of the Wisconsin area health department,

The study was in total in a sample of 60

According to the question. A journal article that involves a statistical study.

find:

a) The study descriptive or inferential

Yes, know the study is infrential according to the obtained from

Data

find :-) The Variable used in study. low,

과 a continuous variable. is size and weight

Know The sample is varied and representative

The rational function f(x) = (x - 3) / (x + 2) have a domain corresponding to any real number except x = - 2.

In this problem we find a defined rational functions whose numerator and denominator are both linear equation. The domain of a function is the set of all values of x such that f(x) exists.

By function theory, the domain of all linear equations is the set of all real numbers and the domain of rational equations is the domain of the numerator except the values of x such that the denominator becomes zero.

Then, we need to determine the values of x such that:

x + 2 = 0

x = - 2

The domain of the rational function f(x) = (x - 3) / (x + 2) is all the real numbers except x = - 2.

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The maximum number of hours that he can hire the cleaning service is 5.

An equation is an expression that shows the relationship between two or more numbers and variables.

Let us consider the number of hours for which the total cost would be the same be x

The first equation would be

$15x > $75

Now equate these equations

$15x - $75 = 0

15x = 75

x = 5

Hence, the maximum number of hours that he can hire the cleaning service is 5.

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Answer:

slope = 4

points on graph = (0,0), (1,4)

Step-by-step explanation:

line going through quadrants 1 and 3. Straight line.

Answer: The numbers are 25 and 68.

Step-by-step explanation:

Answer:

x = 68

y = 25

Step-by-step explanation:

Let the larger number be x and smaller number be y.

x = 18 + 2y ----------------(1)

x + y = 93 -----------------(2)

Put Eq. (1) in Eq. (2)

18 + 2y + y = 93

18 + 3y = 93

Subtract 18 to both sides

3y = 93 - 18

3y = 75

Divide 3 to both sides

y = 72/3

Put y = 24 in Eq. (1)

x = 18 + 2(25)

x = 18 + 50

[tex]\rule[225]{225}{2}[/tex]

The answer would be (5,0)

Answer:

C) y - 2 = 2 ( x - 3 )

Step-by-step explanation:

This is point-slope form btw. Hope it helps!

The value of n (FUGUR) will be;

⇒ n (FUGUR) = 112

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The data of mathematics students is,

60 study French, 30 study French and German

55 study German, 25 study French and Russian

75 study Russian, 35 study German and Russian

12 students study all the three languages.

Now,

Let F, G, R denote the set of students studying French, German and Russian respectively.

And, The data of mathematics students is,

n (F) = 60, n (F ∩ G) = 30

n (G) = 55, n (F ∩ R) = 25

n (R) = 75 , n (G ∩ R) = 35

n (F ∩ G ∩ R) = 12

Since, We know that;

⇒ n (FUGUR) = n (F) + n (G) + n (R) - n (F ∩ G) - n (F ∩ R) - n (G ∩ R)

                        + n (F ∩ G ∩ R)

Substitute all the values, we get;

⇒ n (FUGUR) = n (F) + n (G) + n (R) - n (F ∩ G) - n (F ∩ R) - n (G ∩ R)

                        + n (F ∩ G ∩ R)

⇒ n (FUGUR) = 60 + 55 + 75 - 30 - 25 - 35 + 12

⇒ n (FUGUR) = 112

Thus, The value of n (FUGUR) will be;

⇒ n (FUGUR) = 112

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Answer:

[tex]\textsf{Vertex form}: \quad f(x)=(x-4)^2+2[/tex]

[tex]\textsf{Standard form}: \quad f(x)=x^2-8x+18[/tex]

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{5.6 cm}\underline{Vertex form of a quadratic equation}\\\\$y=a(x-h)^2+k$\\\\where:\\ \phantom{ww}$\bullet$ $(h,k)$ is the vertex. \\ \phantom{ww}$\bullet$ $a$ is some constant.\\\end{minipage}}[/tex]

From inspection of the given graph:

Substitute the vertex and point (0, 18) into the vertex formula and solve for a:

[tex]\begin{aligned}y&=a(x-h)^2+k\\\implies 18&=a(0-4)^2+2\\18&=a(-4)^2+2\\18&=16a+2\\16a&=16\\a&=1\end{aligned}[/tex]

Substitute the found value of a and the vertex into the formula:

[tex]\implies y=1(x-4)^2+2[/tex]

[tex]\implies f(x)=(x-4)^2+2[/tex]

To write the equation in standard form, expand the brackets:

[tex]\implies f(x)=(x-4)^2+2[/tex]

[tex]\implies f(x)=(x-4)(x-4)+2[/tex]

[tex]\implies f(x)=x^2-8x+16+2[/tex]

[tex]\implies f(x)=x^2-8x+18[/tex]

The value of c is 0 guaranteed by the Mean Value Theorem for Integrals for the function 2x+1 on the interval [3,6].

Mean value theorem states, roughly, that for a given planar arc between two endpoints, there is at least one point at which the tangent to the arc is parallel to the secant through its endpoints.

Given.

Function is 2x+1 on the interval [3,6]

f(x)=2x+1

f(x) continuous on [3, 6] and differentiable on (3, 6) so the MVT applies here.

f(3)=7

f(6)=13

Average rate of change of f on [3,6]

= (13-7) / (6-3) = 6/3=2

To find the c-value guaranteed by the MVT, such that the instantaneous rate of change when x = c is 2, we differentiate, set f'(x) = 2, and solve:

f'(x) = 2 and x = 1.

c = 0 is the only c-value in the interval at which the instantaneous rate of change = the average rate of change.

Hence, the value of c is 0 guaranteed by the Mean Value Theorem for Integrals for the function 2x+1 on the interval [3,6].

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