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4 years ago

Simplify the expression. (20 points)

Mathematics

1 answer:

goldenfox [79]4 years ago

7 0

- 9/ ((-x^2 + 9)^1/2(x+ 3))(x-3)

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ASAP I need with this question

il63 [147K]

Answer:

the answere is 3.6

Step-by-step explanation: it would be the third one

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4 years ago

Identify the unit rate shown in the graph

muminat

Answer: it’s C

Step-by-step explanation:

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3 years ago

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Will give brainliest. Pls help. The volume of a cylinder is 300 feet^3. Find the volume of a cone and a sphere that have the sam

USPshnik [31]

Answer:

Cone: 100ft^3

Sphere: 200ft^2

Step-by-step explanation:

Firstly, the volume of a cone is 1/3 of the volume of the cylinder. It's literally in the formula:

$V_{cone} = \frac{h \pi r^2}{3}\\\textrm{As you can notice, }\pi r^2\textrm{ is the area of the base, like in the cylinder formula}\\$

So we can just instantly tell that the volume of the cone is 100feet^3.

Not for the sphere - we can assume that if the height is the same, it's equal to two radiuses, or simply - to the diameter. Let's use the formula for the volume of a sphere, but substitute one of the radiuses with $\frac{h}{2}$

$V_{sphere} = \frac{4\pi r^3}{3} = \frac{2\pi r^2 h}{3} = \frac{2h\pi r^2}{3} = 2\cdot V_{cone}$

So we can instantly tell that the volume of the sphere is 200feet^3

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3 years ago

Help me plz figure this out.

Arte-miy333 [17]

Answer:

Step-by-step explanation:

YOu have to take out hte inches so now we have A and B. But, the inches cancel out so we get B.

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3 years ago

(5,-3), (5,8). Find slope

anzhelika [568]

Answer: 0 slope, horizontal line.

Step-by-step explanation:

when using y2-y1/x2-x1, you would get 8-(-3)/5-5. This simplifies to 11/0, which means that the line would have 0 slope. A line with 0 slope is a horizontal line.

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3 years ago