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3 years ago

Please help with 7-11

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

7 0

The answer there is,-4

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1.A cube has side lengths of 15 inches, what is the surface area and volume of the cube? 2. A cube has side lengths of 8 inches,

omeli [17]

Answer:

Cube 1: 3375 cubed inches, 1350 inches squared.

Cube 2: 512 cubed inches, 384 inches squared.

Step-by-step explanation:

Formula for Volume of a Cube: $V=s^3\\$ (s - side length)

Formula for Surface Area of a Cube: $SA=6s^2$ (s- side length)

The side length's 15 inches.

Find the volume:

$V=15^3\\\rightarrow 15*15*15=3375\\\boxed {V=3375}$

The volume of cube one is 3375in³.

Find the surface area:

$SA=6(15)^2\\\rightarrow 15^2 = 225\\SA = 6 * 225\\\boxed {SA=1350}$

The surface area of cube 1 is 1350in².

The side length's 8 inches.

Find the volume:

$V=8^3\\\rightarrow 8*8*8= 512\\\boxed {V=512}$

The volume of cube two is 512in³.

Find the surface area:

$SA=6(8)^2\\\rightarrow 8^2=64\\SA=6*64\\\boxed {SA=384}$

The surface area of cube 2 is 384in².

<em>Brainilest Appreciated. </em>

3 0

3 years ago

Simplify the square root of -121?

poizon [28]

Answer:

11<em>i</em>

Step-by-step explanation:

first you have to get a postive root.

$\sqrt{-121} \\ \sqrt{-1} \sqrt{121} \\$

then you solve the square roots from there, keeping in mind the imaginary number answer to the square root of -1, <em>i</em>.

$\sqrt{-1} = i\\ \sqrt{121} =11\\ 11i$

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SOMEBODY PLEASE HELP ME! [99 POINTS]

Arte-miy333 [17]

The answer is D since
4*4=16
16*4=64
64*4=256

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Describe the graph of the function at its roots. g(x) = (x + 4)^4(x − 9)

pentagon [3]

Answer: touches,crosses

Step-by-step explanation:

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7. (Sec. 7.2) In a survey of 2004 American adults, 501 of them said that they believed in astrology. (a) Calculate and interpret

Salsk061 [2.6K]

Find the given attachments for complete answer

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