7r-9s+2r
evaluate for the following expressions for r=7,s=-2 and t=5

Answer: 1372.33

Step-by-step explanation: add it all up

Addition can be defined as the process of adding two numbers. The total bill Better Builder Company should give the customer if they want to make a profit of $225 on the job is $1408.74.

Addition can be defined as the process of adding two numbers such that the result is the combined value of the two numbers.

To make a profit the Better builder company needs to add all the expenses and the profit they need to make. Therefore, the sum can be written as,

Total Bil = $672.25 + $86.77 + $39.41 + $180.96 + $204.35 + $225

              = $1408.74

Hence, the total bill Better Builder Company should give the customer if they want to make a profit of $225 on the job is $1408.74.

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Answer:

Step-by-step explanation:

I think the answer C x=42 y=30, correct me if i'm wrong

Answer:

-3(x + 6)(x + 2)

Step-by-step explanation:

FACTOR

-3(x² + 8x + 12) FIND TWO #'S THAT ADD TO 8 AND MULTIPLIES TO 12

-3(x + 6)(x + 2)

Answer:

no solution

Step-by-step explanation:

Given

2(n + 2) = 4n + 1 - 2n ← distribute parenthesis on left side

2n + 4 = 2n + 1 ( subtract 4 from both sides )

2n = 2n - 3 ( subtract 2n from both sides )

0 = - 3 ← not possible

This indicates the equation has no solution

The original equation 2(n + 2) = 4n + 1 - 2n has no solution for n.

To solve the equation 2(n + 2) = 4n + 1 - 2n, we can simplify and then solve for the variable n.

First, distribute 2 to the terms inside the parentheses:

2n + 4 = 4n + 1 - 2n

Next, combine like terms on the right side:

2n + 4 = 2n + 1

Now, subtract 2n from both sides to isolate the n term:

2n - 2n + 4 = 2n - 2n + 1

4 = 1

Since 4 is not equal to 1, there is no solution to this equation.

Therefore, the original equation 2(n + 2) = 4n + 1 - 2n has no solution for n.

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Answer:

Step-by-step explanation:

Just divide y by x and what ever you get is the answer

Hope this helps!

Answer:

The first one (1-4, 2-8, 3-12) belongs to 4

The second one (2-4, 4-8, 6-12) belongs to 2

The third one (4-6, 8-12, 12-18) belongs to 3/2

The last one (1-6, 2-12, 3-18) belongs to 6

Step-by-step explanation:

I divided the y numbers from the x

Answer:

9/25

Step-by-step explanation:

I guess you mean 45/125

they are divisible by 5

45/5 = 9

125/5 =25

9/25

Answer:

1st,2nd,5th,6th

Step-by-step explanation:

Simplifying the top:

(2* a^3 * b^5)^2 * (6ab)

4* a^6 *b^10 * (6ab)

24 *a^7 * b^11

so we have

(24 *a^7 * b^11) / (-3* a^5 *b)

immediately we can simplify 24 and -3

(-8 *a^7 * b^11) / ( a^5 *b)

a^7 and a^5 can cancel into just a^2

(-8 *a^2 * b^11) / (b)

b^11 and b cancels to b^10

-8 *a^2 * b^10

so that is your answer:

-8[tex]a^{2}[/tex][tex]b^{10}[/tex]

Answer:

it looks like you are trying to find x in this problem so x= -6

Answer:

Step-by-step explanation:

3 + 5x = 3x -9

-3  -3x   -3x  -3

2x = -12

2x/2 -12/2

X=     -6

Answer:

23, 11, -13

Step-by-step explanation:

y+6(-2)=11

y-12=11

y=23

y+6(0)=11

y+0=11

y=11

y+6(4)=11

y+24=11

y=-13

Answer:

3752mm or 3752 millimeter

Step-by-step explanation:

We are told in the question that Sara knits 469 mm everyday.

Hence, this can be expressed as:

1 day, she knits = 469 mm

8 days =

Cross Multiply

469mm × 8

= 3752mm

Therefore the amount of scarft she would have knitted after 8 days = 3752mm

Answer:

-14

Step-by-step explanation:

Answer:

ummm

Step-by-step explanation:

Answer:

x = 4

Step-by-step explanation:

[tex]x + 6 = 10 \\ x = 10 - 6 \\ x = 4[/tex]

Answer:

(260/4)*18 = 1,170 miles

Step-by-step explanation:

Answer:

r < 3

Step-by-step explanation:

Step 1: Write out inequality

5r + 2 < 17

Step 2: Subtract 2 on both sides

5r + 2 - 2 < 17 - 2

5r < 15

Step 3: Divide both sides by 5

5r/5 < 15/5

r < 3

In this case, r has to be smaller than 3. So anything like -2, -15, or even -12413573875942 works as r, as long as it's smaller than 3.

Answer:

x=65

Step-by-step explanation:

you have to get all variables to one side so you would subtract 6 from seven getting one and then add 35 to 30 giving you 65 :)

Answer:

x = 65

Step-by-step explanation:

7x - 35 = 30 + 6x First subtract 6x from both sides

x - 35 = 30 Then add 35 to both sides

x = 65

Answer:

Step-by-step explanation:

123+4 =127

Aaron 14 years

Devon 17 years

D = A + 3

D + A = 31

replace D

A + 3 + A = 31

2A = 31 - 3

2A = 28

A = 14 years

D = 17 years

Answer:21ft and 79ft

Step-by-step explanation:

Answer:

21 and 79 ft

Step-by-step explanation:

Answer:

Instructions are below.

Step-by-step explanation:

Giving the following information:

Fixed costs= 4,000 + 10,000= $14,000

Unitary variable cost= $5.5

Selling price= $7.2

To calculate the number of units to be sold to break-even, we need to use the following formula:

Break-even point in units= fixed costs/ contribution margin per unit

Break-even point in units= 14,000 / (7.2 - 5.5)

Break-even point in units= 8,235 units

In dollars:

Break-even point (dollars)= fixed costs/ contribution margin ratio

Break-even point (dollars)= 14,000 / (1.7/7.2)

Break-even point (dollars)= $59,294

Now, imagine the company requires a profit of $50,000:

Break-even point in units= (fixed costs + desired profit) / contribution margin per unit

Break-even point in units= 64,000/1.7

Break-even point in units= 37,647 units

Break-even point (dollars)= (fixed costs + desired profit) / contribution margin ratio

Break-even point (dollars)= 64,000 / (1.7/7.2)

Break-even point (dollars)= $271,059

Answer:

Step-by-step explanation:

A 2nd-degree polynomial is one whose highest degree'd term is a 2. a has an x-squared as its highest power, so it is a second degree; b also has an x-squared as its highest power, so it is a second degree; e, the same; f, the samel; g, the same.

Answer:

x=2

Step-by-step explanation:

to find x- intercept substitute y=0

move variable to the left hand side and change its sign -5x=-10

then divide both sides of the equation by -5

and the final answer is x=2

hope this helps!

Answer:

Both Jim and Lynn, as midpoint formula observes commutative property, which commutes the position of each endpoint inside the sum without altering the result.

Step-by-step explanation:

We must remember that location of midpoint of any line segment can be determined by using this formula in function of the endpoint locations:

[tex](x_{M},y_{M}) = \left(\frac{x_{R}+x_{S}}{2}, \frac{y_{R}+y_{S}}{2} \right)[/tex]

Where:

[tex]x_{M}[/tex], [tex]y_{M}[/tex] - Location of midpoint, dimensionless.

[tex]x_{R}[/tex], [tex]y_{R}[/tex] - Location of endpoint R, dimensionless.

[tex]x_{S}[/tex], [tex]y_{S}[/tex] - Location of endpoint S, dimensionless.

Both Jim and Lynn, as midpoint formula observes commutative property, which commutes the position of each endpoint inside the sum without altering the result. That is:

[tex](x_{M},y_{M}) = \left(\frac{x_{R}+x_{S}}{2}, \frac{y_{R}+y_{S}}{2} \right) = \left(\frac{x_{S}+x_{R}}{2}, \frac{y_{S}+y_{R}}{2} \right)[/tex]

Answer:

3

Step-by-step explanation:

x=12

12/4 + 6(12-12)

12/4 +6(0)

12/4 + 0

3+0

3

Answer: its 18, x=18

Answer:

8

Step-by-step explanation:

This is because the expression is already in decimal form

Answer:

44

Step-by-step explanation:

180-48/3 to find the value of x