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4 years ago

Find the perimeter of a rectangle that is 7 cm long is 7 cm wide

Mathematics

1 answer:

ella [17]4 years ago

5 0

Answer:

P = 28cm

Step-by-step explanation:

The general formula for the perimeter of a rectangle is: 'P = 2L +2W' (L being the length and W being the width of the rectangle.)

Step 1: Substitute L = 7, W = 7 into the general formula.

P = 2(7) + 2(7)

Step 2: Solve!

P = 2 x 7 + 2 x 7

P = 14 + 14

P = 28

Step 3: Don't forget to add the units of measurement! (In this case 'cm')

Therefore, P = 28cm

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If you have 7x^2 + 3 if the input is 4 what is the output

Usimov [2.4K]

7x^2 + 3
7(4)^2 + 3
7(16) + 3
112 + 3
115.

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3 years ago

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We want to factor the following expression: (x 3)^2 14(x 3) 49(x 3) 2 14(x 3) 49(, x, plus, 3, ), squared, plus, 14, (, x, plus,

Nesterboy [21]

Answer:

$U = x$

$V=10$

Step-by-step explanation:

Given

$(x +3)^2 + 14(x + 3) + 49 = (U + V)^2$

Required

Find U and V

We have:

$(x +3)^2 + 14(x + 3) + 49 = (U + V)^2$

Expand

$x^2 + 6x + 9 + 14x + 42 + 49 = (U + V)^2$

Collect like terms

$x^2 + 6x + 14x + 9 + 42 + 49 = (U + V)^2$

$x^2 + 20x + 100 = (U + V)^2$

Expand

$x^2 + 10x + 10x + 100 = (U + V)^2$

Group

$[x^2 + 10x] + [10x + 100] = (U + V)^2$

Factorize each group

$x[x + 10] + 10[x + 10] = (U + V)^2$

Factor out x + 10

$[x + 10][x + 10] = (U + V)^2$

So, we have:

$[x + 10]^2 = (U + V)^2$

By comparison

$U = x$

$V=10$

7 0

3 years ago

2 1/3 times 3 1/2 As a mixed number

Sedbober [7]

Answer:

8 1/6

Step-by-step explanation:

8 1/6 is the answer. Hope this helps!

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3 years ago

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0.6c+2.5=3.22 solve for c

Gemiola [76]

The answer to 0.6c+2.5=3.22 solving for C Answer:
c=1.2

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3 years ago

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<img src="https://tex.z-dn.net/?f=%20-%209%20%5Ctimes%204%20%3D%20" id="TexFormula1" title=" - 9 \times 4 = " alt=" - 9 \times 4

Alika [10]

Hey!!!

Here's your answer

-9*4=-36

So the right answer -36.

Hope it will help you

Good luck on your assignment

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3 years ago

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