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2 years ago

Which pair shows equivalent expressions?

Mathematics

1 answer:

umka21 [38]2 years ago

5 0

Answer:

Don'tknow I am sorry...................... 

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A manufacturing machine has two processes. One of them is repeated 4 times a

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The number of girls in cobbs class is 2 less than 3 times the number of boys. She has 26 students in her class how many are boys

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Answer:

7 are boys

Step-by-step explanation:

Make a system of equations where g is for girls and b is for boys.

b+g=26

g=3b-2

Substitute "3b-2" in for "g" in the first equation.

b+(3b-2)=26

Rewrite without the parentheses because it's addition and not multiplication.

b+3b-2=26

Combine like terms.

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Add 2 to both sides.

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Divide by the coefficient of the variable to get it alone.

b=7

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3 years ago

This table represents a funtion. What is f(-2) ?

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2 years ago

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The width of a rectangle is 6 2/3 inches. The length of the is twice it’s width. What so the perimeter of the rectangle?

Nookie1986 [14]

$\text {Width = } 6\dfrac{2}{3} \text { inches}
$

The length is twice its width:
$\text {Length = } 2 \times 6\dfrac{2}{3} \text { inches}$

Change to improper fraction:
$\text {Length = }2 \times \dfrac{20}{3} \text { inches}$

Combine into single fraction:
$\text {Length = } \dfrac{40}{3} \text { inches}$

Find Perimeter :
$\text {Perimeter = Length + Length + Width + Width}$

$\text {Perimeter = } \dfrac{40}{3} + \dfrac{40}{3} + \dfrac{20}{3} + \dfrac{20}{3} = \dfrac{120}{3} = 40 \text { inches}$

$\bf \text {Answer: Perimeter = 40 inches}$

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3 years ago

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