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3 years ago

What’s the value of x???

Mathematics

2 answers:

Anni [7]3 years ago

8 0

Answer:

C. x=15

Step-by-step explanation:

Use the Pythagorean Theorem:

$a^{2} +b^{2} =c^{2}$

Plug in the known values:

$9^2+12^2=c^2$

Simplify:

$81+144=c^2$

Solve:

$255=c^2$

$\sqrt{225} =c^$

$15=c$

Black_prince [1.1K]3 years ago

3 0

Answer:??? sorry i dont know

Step-by-step explanation:

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PolarNik [594]

Answer:

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Step-by-step explanation:

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1 year ago

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pantera1 [17]

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3 years ago

Which expression is the same as 6 times 52?

Blizzard [7]

Answer:

Step-by-step explanation:

6 times 50 = 300

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3 years ago

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The area of the square hole is 8 square centimeters. The volume of a cube shaped block is 64 cubic centimeters. Which edge lengt

damaskus [11]

case a) The area of the square hole is 8 square centimeters

we know that

the area of a square is equal to

$A=b^{2}$

where

b is the length side of the square

in this problem we have

$A=8\ cm^{2}$

Find the length side b

$b^{2} = 8 \\b= \sqrt{8} \ cm\\b= 2\sqrt{2} \ cm$

the answer Part a) is

the length side of the square is $2\sqrt{2} \ cm$

Part b) The volume of a cube shaped block is 64 cubic centimeters

we know that

the volume of a cube is equal to

$V=b^{3}$

where

b is the length side of the cube

in this problem we have

$V=64\ cm^{3}$

Find the length side b

$b^{3} = 64 \\b= \sqrt[3]{64} \\b= 4\ cm$

therefore

the answer Part b) is

the length side of the cube is $4\ cm$

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3 years ago

Which monomials are perfect cubes? Check all that apply.

lozanna [386]

A perfect cube is a number that resulted from multiplying a number three times by itself. A perfect cube is also a number that has an exact cube root.

8x^12 ⇒ 2x^4 * 2x^4 * 2x^4
27x^9 ⇒ 3x³ * 3x³ * 3x³

Only two monomials are perfect cubes.

6 0

4 years ago

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