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3 years ago

A square has sides 10x. Write and simplify an expression for the perimeter of that square.

2 answers:

6 0

Perimiter of a square
square has 4 equal sides
so if th legnth of 1 side is x then total perimiter=4x
legnth of side is 10x
therfor perimiter=40x

rectanglepermiter has 2 pairs of sides with same legnth
RP=2L+2W=2(L+W)
L=2x+7
W=3x+8y
so
RP=2(2x+7+3x+8y)
RP=2(5x+8y+7)
RP=10x+16y+14

square=40x
rectangle=10x+16y+14

Verizon [17]3 years ago

6 0

1. Square:

There are 4 equal sides of a square, so Perimeter = side length * 4

Perimeter expression - (4)10x

The perimeter of the square is 40x

2. Rectangle:

There are 4 unequal sides of a rectangle, so Perimeter = 2l + 2w

Length: 2x+7

Width: 3x+8y

Perimeter expression - 2(2x+7) + 2 (3x+8y)

(2x+7) *2 = 4x + 14

(3x+8y) *2 = 6x+16y

(4x +14) + (6x + 16y)

4x+6x +16y+14

The perimeter of the rectangle is 10x + 16y + 14

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3 years ago

You are standing on a small fire tower 50 feet from a tree. You notice a squirrel in the tree. You measure the angle of depressi

irina [24]

Answer:

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Step-by-step explanation:

see the attached figure to better understand the problem

step 1

In the right triangle ACD

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step 2

In the right triangle ABE

Find the length side AB

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2 years ago

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quester [9]

Answer:

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B. the equation is an exponential decay equation.

F. $28000 represents the initial cost of an automobile that depreciates 27% per year over the course of t years.

Step-by-step explanation:

i) the cost of an automobile is given by the equation is

C(t) = $28000\times(0.73)^{t}$ , where C(t) represents the cost and t represents the time in years

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ii) when t = 0 then the cost is C(0) = 28000 represents the initial cost.

iii) from the equation in i) we can understand that the cost depreciates 27% per year over the course of t years.

therefore the correct options are:

B. the equation is an exponential decay equation.

F. $28000 represents the initial cost of an automobile that depreciates 27% per year over the course of t years.

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