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Nana76 [90]
3 years ago
11

Find x! Please help!!

Mathematics
1 answer:
a_sh-v [17]3 years ago
5 0

{(8 + x)}^{2}  =  {8}^{2}  +  {15}^{2}  \\ {(8 + x)}^{2}  =  64  +  225 \\  {(8 + x)}^{2}  = 289 \\ {(8 + x)}^{2}  =  {17}^{2}  \\ 8 + x = 17 \\ so \: x = 17 - 8 = 9
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SHOW YOUR WORK! Marking the best response with brainliest:) thank u
sdas [7]

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

where

l is the length

w is the width

From the question

The length is 3x + 7

The width is 2x + 2

The perimeter is

<h3>2( 3x + 7) + 2( 2x + 2)</h3>

Simplify

6x + 7 + 4x + 4

Group like terms

6x + 4x + 7 + 4

We have the final answer as

<h3>10x + 11</h3>

Hope this helps you

6 0
3 years ago
16 The perimeter of the pentagon is equal to the perimeter of the square.
STatiana [176]

7x+2

Step-by-step explanation:

add all the sides of the pentagon and make it equal to the perimeter of the square which is 4y

sides of the pentagon are

5x+3

2x+3

7x+4

9x-10

5x+8

28x+8=4y

7x+2 = y

7x+2 = answer

gathmath

gathmathier6961

another way :

in a standardized test you may want to use real numbers

make x equal a prime number like 3

so then the sides are

18

9

25

17

23

=

92

then divide by 4

23

then divide by 3

which is 7 remainder of 2

which is

7x+2

8 0
2 years ago
Does anybody have their geometry notebook for E2020? I need it to get credit for the course but I lost mine.
xxMikexx [17]

Answer:

Sorry, I don't have one.

Step-by-step explanation:

6 0
3 years ago
The dietitian uses 35 six-ounce glasses and 50 eight-ounce glasses at breakfast. Represent in fraction form the relationship of
koban [17]
35 6ouc 50 8ouc So I guess u just ad all the number s they gaveu lodkfh
6 0
2 years ago
I need help..... I don't understand at all
cluponka [151]
I think you have to estimate to a whole so 2 1/2 would be 3
8 0
3 years ago
Read 2 more answers
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