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lawyer [7]
3 years ago
7

Help find the perimeter and area

Mathematics
2 answers:
Firlakuza [10]3 years ago
5 0

Answer:

Perimeter = 8.4×4 = 33.6 meters

Area = 8.4^2 = 70.56 square meters

hichkok12 [17]3 years ago
4 0

Answer:

P =33.6 m

A = 70.56 m^2

Step-by-step explanation:

The perimeter of a square is given by

P =4s = 4(8.4) =33.6 m

The area of a square is given by

A = s^2 = (8.4) ^2 =70.56 m^2

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Answer:

2rcosθ+3rsinθ=6

Step-by-step explanation:

x=rcosθ

y=rsinθ

2rcosθ+3rsinθ=6

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Suppose that 10 people, including you and a friend, line up for a group picture. How many ways can the photographer rearrange th
slamgirl [31]

Answer:

483 840 ways

Step-by-step explanation:

Let you and your friend be A and B.

With three people always between you two,, we have

Case 1: AxxxBxxxxx

Case 2: xAxxxBxxxx

Case 3: xxAxxxBxxx

Case 4: xxxAxxxBxx

Case 5: xxxxAxxxBx

Case 6: xxxxxAxxxB

So there is 6 ways of arranging you two through the line and for each of the six cases,

If you two remained in your positions, the rest can be arranged in 8! ways

Also for each case, you two can interchange your positions in 2! ways

Therefore,

The photographer can rearranged the line keep three people between you an your friend in

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7 0
3 years ago
Use substitution to solve the<br> following system of equations.<br> 9x + 5y = 32 AND y = -3x + 4
Darya [45]

Answer:

x = -2

y = 10

Step-by-step explanation:

Since they already gave y as -3x +4, you will then have to substitute that amount into the formula

9x + 5y = 32

By doing that you get

9x +5(-3x+4) = 32

9x -15x +20 = 32

Then, you ill take 20 to the other side to subtract 32, which will get you

-6x = 12

Then, you will get x = -2

Then substitute that for the equation

y = -3x + 4

You will get

y = -3(-2) + 4,

You will get y as 10

SO then your final answer is x = -2, y = 10

4 0
3 years ago
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