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riadik2000 [5.3K]
3 years ago
15

A number added to itself equals 3 less than the number..

Mathematics
1 answer:
ivanzaharov [21]3 years ago
3 0
The answer would be -6.
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I need help! who ever get this right and explain nicely then I make you brainlist.
Lelechka [254]

Answer:

1. 64

2. 72 square feet

3. 31.5 square feet

Step-by-step explanation:

For the first one use the equation A=bh.

Plug in your values: A=12.8*5.

Solve: A=64

For the second one multiply 8*3 which gives you 24. Next multiply that by 3 to give you 72 square feet.

For the third one multiply 9 by 3.5 to get 31.5 square feet.

5 0
2 years ago
Rectangular prism A measures 2 inches by 7 inches by 8 inches. Rectangular prism B measures 1 inches by 5 inches by 10 inches.
satela [25.4K]

The Volume for Rectangular prism A is 172 inches², Volume = 112 inches³

Surface Area to Volume Ratio = 43/28

<h3>Mensuration of Solids</h3>

Given Data

Rectangular prism A

Length = 2 inches

Width = 7 inches

Height = 8 inches

Surface Area

A=2(wl+hl+hw)

A=2(7*2+8*2+8*7)

A=2(14+16+56)

A= 172 inches²

Volume

Volume = L*W*H

Volume = 2*7*8

Volume = 112 inches³

Surface Area to Volume Ratio

= 172/112

= 43/28

Learn more about Mensuration of Solids here:

brainly.com/textbook-solutions/q-7-composite-figures-use-diagram-backpack-right

#SPJ1

7 0
1 year ago
Which choice correctly shows the solution(s) of the equation x2 = 225?
prisoha [69]

Answer:

C)x = +/-15

Step-by-step explanation:

15x15=225

-15x-15=225

7 0
3 years ago
Pls help asap!!!<br><br><br><br> Solve for x . 2x=y
OLEGan [10]
The answer to this question is 0
6 0
2 years ago
A student scored 66,87,and 97 on three algebra tests. What must he score on the fourth test in order to have an average grade of
adoni [48]

Answer:66,97

Step-by-step explanation:

8 0
3 years ago
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