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boyakko [2]
3 years ago
6

If f(x) = 2(x − 5), find f(8).

Mathematics
1 answer:
Jet001 [13]3 years ago
4 0

Answer:

6

Step-by-step explanation:

f(x) = 2(x-5)

f(8) = 2(8-5)

  1. parentheses comes first so, 8-5 = 3
  2. 2(3), so multiply and the final answer is 6

f(8) = 6

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John had to pay a combined electric and gas bill $150. The electric portion of the bill was $90. What is the ratio of money spen
tatuchka [14]

Given:

John had to pay a combined electric and gas bill $150.

The electric portion of the bill was $90.

To find:

The ratio of money spent on electric to that on gas.

Solution:

Let x be the amount of gas bill.

The electric portion of the bill was $90 and John had to pay a combined electric and gas bill $150.  So,

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7 0
3 years ago
To put a narrow border around a square photo, Alicia has 32 inches of trim. The area of the photo is 60 square inches. Will she
olga nikolaevna [1]

Answer: Yes, she will have enough trim for all four sides of the square, because the perimeter of the square photo (30.98 inches) is less than  32 inches of trim she has.

Step-by-step explanation:

The formula for calculate the area of a square is:

A=s^2

Where "s" is the lenght of any side of the square.

The formula for calculate the perimeter of a square is:

P=4s

Where "s" is the lenght of any side of the square.

We know that that the area of the photo is 60 square inches, therefore, we can solve for "s" from the formula  A=s^2 and find its value:

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Substituting the value of "s" into the formula P=4s, we get that the perimeter of the photo is:

P=4(2\sqrt{15}in)=30.98in

Therefore, since Alicia has 32 inches of trim and 30.98in, we can conclude that she will have enough trim for all four sides of the square.

8 0
3 years ago
Simplify the expression:<br> (1 2/7)(-4 1/5)
stealth61 [152]

Answer:

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Step-by-step explanation:

Simplify

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multiply together

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u can simplify by diving by 5 to get

-27/5

4 0
3 years ago
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