I NEED HELP please

Mathematics

1 answer:

Daniel [21]3 years ago

3 0

Answer:

1. =2

2. times 2

3. b.

Step-by-step explanation:

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Find the difference.<br> 2-26 - (-20)

Yanka [14]

Answer:

-4

Step-by-step explanation:

2-26=-24

-24-(-20) basically says -24+20=-4

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3 years ago

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A number is randomly selected from {1, 2, 3, 4, 5, 6, 7, 8, 9, 10).

Katyanochek1 [597]

In this case, the complement would be selecting a number less than or equal to 7; the probability of this occurring is $\boxed{\frac{7}{10}}.$

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What is x, if the volume of the cylinder is 768pi rcm3?

AVprozaik [17]

let's recall Cavalieri's Principle, <u>solids with equal altitudes and cross-sectional areas at each height have the same volume</u>, so even though this cylinder is slanted with a height = x and a radius = 8, the cross-sectional areas from the bottom to top are the same thickness and thus the same area, so its volume will be the same as a cylinder with the same height and radius that is not slanted.

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=8\\ h=x\\ V=768\pi \end{cases}\implies 768\pi =\pi (8)^2(x)\implies 768\pi =64\pi x \\\\\\ \cfrac{768\pi }{64\pi }=x\implies 12=x$

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3 years ago

Which recursive definition could be used to generate the sequence {1, 2,2,4,8,32}

Alexandra [31]

Given that the sequence is:
1,2,4,8,32
the recursive formula will be found as follows:
first term is=1
the sequence can be written as:
1,2,4,8,32
=(1*2^0),(1*2^1),(1*2^2),(1*2^3),(1*2^4)
thus the recursive formula will be
an=a1(r)^(n-1)
plugging the values we get:
an=1(2)^(n-1)

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salantis [7]

no rurio greob tryo yeu

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4 years ago

I NEED HELP please ​

I NEED HELP please