The area of a rectangle is 4y + 10

Mathematics

1 answer:

algol [13]3 years ago

7 0

Answer:

A. I think is the answer

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By decreasing each dimension by 1 unit, the area of a rectangle deceased from 40 square feet to 28 square feet. Find the percent

arsen [322]

Answer:

30%

Step-by-step explanation:

Initial area is 40 square feet

Final area is 28 square feet

Difference between the initial and final areas will be 40-28=12 square feet

Taking the initial area as the base area and expressing the area change in percentage then the percentage decrease will be equivalent to

$\frac {12\times 100}{40}=30$

Therefore, the decrease in area expressed as a percentage is equal to 30%

8 0

3 years ago

Please help with number 3 i dont understand it

prisoha [69]

I believe the answer is A.

Absolute value best proves my answer.

Absolute value is how far a number is from zero.

6 0

3 years ago

Read 2 more answers

How to do this question plz answer me step by step plzz plz

faust18 [17]

$\text{Find the perimeter of the track field}\\\\\text{We already have one of our outside value, 50. We can multiply}\\\text{this by 2}\\\\50\cdot2=100\\\\\text{Now we need to find the perimeter, better known as the circumference}\\\text{of the half circle}\\\\\text{Since there is two half circles, we can make one}\\\text{whole circle}\\\text{Use the equation:}\\\\C=\pi \cdot d\\\\\text{Plug in and solve:}\\\\C=\pi \cdot 30\\\\C=94.24778\\\\$