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2 years ago

Expand and simply x(2x + 3) + 5( x - 7)

Mathematics

1 answer:

zalisa [80]2 years ago

6 0

Answer:

2x² + 8x - 35

Step-by-step explanation:

x(2x + 3) + 5(x - 7) ← distribute both parenthesis

= 2x² + 3x + 5x - 35 ← collect like terms

= 2x² + 8x - 35

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Identify the area, show work

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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3 years ago

Sonia had $37 in her checking account. She then spent $52 on school supplies. What is the current balance of her checking accoun

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3 years ago

Read 2 more answers

You are purchasing books summer reading for $4.50 each. Part A: Your total cost, C, depends on,The input is,and the output is,Pa

Crazy boy [7]

Answer:

Part A) see the explanation

Part B) $C(12)=\$54$

Step-by-step explanation:

Part A)

we know that

A relationship between two variables, x, and C, represent a proportional variation if it can be expressed in the form $k=\frac{C}{x}$ or $C=kx$

Let

C ---> is the total cost (represent the output or dependent variable)

x ----> is the number of books (represent the input or independent variable)

In this problem

we have a proportional relationship between the variables x and C

Part B) we know that

The linear equation is given by

$C=kx$

The constant of proportionality k is the same that the slope or unit rate of the linear equation

In this problem the constant k is given

$k=\$4.50\ per\ book$

$C=4.50x$

For x=12 books

substitute in the equation and solve for C

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In function notation

$C(12)=\$54$

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3 years ago

I want the answer of this . .

inessss [21]

Answer:

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3 years ago

Expand and simply x(2x + 3) + 5( x - 7)​

Expand and simply x(2x + 3) + 5( x - 7)