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Artemon [7]
3 years ago
12

Which equations are true for x = –2 and x = 2? Select two options

Mathematics
1 answer:
brilliants [131]3 years ago
4 0

Answer:

x^2 – 4 = 0

Step-by-step explanation:

When x = - 2,

x^2 - 4 = 0

( - 2 )^2 - 4 = 0

4 - 4 = 0

When x = 2,

x^2 - 4 = 0

2^2 - 4 = 0

4 - 4 = 0

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What is the volume of a rectangle prism that has a height of 3 inches and a base of 14 square inches
lawyer [7]

Answer:

42 inches cubed

Step-by-step explanation:

The volume of a rectangular prism is base times height.

In this case the base is 14 and the height is 3

(14)(3)=42

3 0
2 years ago
Find the area please
Shtirlitz [24]

Answer:525 to find area multpi all sides

Step-by-step explanation: can i have brainlst since i helped you

3 0
3 years ago
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If a number is not a whole number then it is not a natural number
morpeh [17]
Natural numbers are our counting numbers. the numbers we see in nature. you can count 1,2,3,4 flowers. or 1,2,3,4,5,6,7,8 pedals on the flowers. etc they are our positive integers

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8 0
3 years ago
A cylinder is 20 inches long and has a diameter of 10 inches the approximate volume of the cylinder is_____ cubic centimeters
Lesechka [4]

Answer: 3987.8cm³

Step-by-step explanation:

Volume of a cylinder = πr²h

where

π = 3.14

r = diameter / 2 = 10in/2 = 5inches

h = height = 20in

Volume = πr²h

= 3.14 × 5² × 20

= 3.14 × 25 × 20

= 1570inches³

Since 1 inch = 2.54cm

1570 inch = (1570 × 2.54) = 3987.8cm³

Therefore, the volume of the cylinder is

3987.8cm³ cubic centimeters.

5 0
3 years ago
How do you solve 9x-(5x-7)=39
zysi [14]

First thing you would do is distribute the negative on the outside of the parentheses to the inside terms:

9x - 5x + 7 = 39

Now, combine like terms:

4x + 7 = 39

Subtract 7 from both sides to get variables on one side of the equal sign and constants on the other:

4x = 39 - 7

4x = 32

Divide both sides by 4 to isolate the variable x.

x = 32 / 4

x = 8

6 0
4 years ago
Read 2 more answers
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