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3 years ago

Find the fifth term in the sequence that is defined as follows an=2(-1)^n

Mathematics

1 answer:

Alex73 [517]3 years ago

4 0

Answer:

-2

Step-by-step explanation:

since we're finding the fifth term, n=5

that would make the equation $a_{5}=2(-1)^{5}$

we can simplify this to $a_{5}=2*(-1)$

this makes $a_{5}=-2$

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Which object has a mass of approximately 450 grams?

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3 years ago

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Can you find 2/3 of 120

polet [3.4K]

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3 years ago

Find the volume of a right circular cone that has a height of 16.8 in and a base with a

alexgriva [62]

Answer:

Volume of right circular cone is 388.43 in³

Step-by-step explanation:

Height of circular cone = 16.8 in

Radius of circular cone = 4.7 in

We need to find Volume of right circular cone

The formula used for calculating volume of a right circular cone is: $Volume=\pi r^2\frac{h}{3}$

Putting values and finding volume

$Volume=\pi r^2\frac{h}{3}\\Volume=3.14\times (4.7)^2 \times \frac{16.8}{3}\\Volume=3.14\times 22.09 \times 5.6\\Volume= 388.43 \:in^3$

So, Volume of right circular cone is 388.43 in³

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3 years ago

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LenaWriter [7]

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Step-by-step explanation:

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3 years ago

Question 1 options: 3 8 12 2.5

rewona [7]

Answer:

2.5

Step-by-step explanation:

(I'm assuming you're doing this the same way I learned it, if not I'm sorry if it doesn't make sense)

$\frac{2}{x}$ = $\frac{12}{15}$

Cross multiply

12x=30

Divide

x=2.5

This is just one way to do the problem. An easier way is to simplify the fractions.

$\frac{2}{x}$ = $\frac{4}{5}$

You can either cross multiply or figure out that 2 is half of four and simply divide 5 by 2 which will also result in 2.5

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3 years ago