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3 years ago

6

A survey showed that 23 out of every 100 students play a musical instrument. What percent of the students surveyed play a musica

l instrument?

1 answer:

Gnom [1K]3 years ago

7 0

Answer:

23%

Step-by-step explanation:

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Perform the indicated operation (-2i+3i)+(-1-4i)

Shtirlitz [24]

Answer:

-1 -3i

Step-by-step explanation:

It is unusual to have two imaginary terms grouped together like this. Taking the question at face value, we treat i as though it were a variable, and collect terms in the usual way.

(-2i +3i) +(-1 -4i) = i(-2+3-4) -1 = -1 -3i

4 0

3 years ago

A population, P(t) (in millions) in year t, increases exponentially. Suppose P(9)=16 and P(18)=24. a) Find a formula for the pop

jenyasd209 [6]

Answer: $\frac{32}{3}\left ( 1.0460\right )^t$

Step-by-step explanation:

Given

Population changes exponentially

$P\left ( t\right )=ab^t$

$P\left ( 9\right )=16$ ------1

$P\left ( 9\right )=16=ab^8$

$P\left ( 18\right =24=ab^{18}$ -----2

divide 1 & 2 we get

$\frac{24}{16}=\frac{b^{18}}{b^9}$

$\frac{3}{2}=b^9$

Substitute $b^9$ in 1 we get

$a=\frac{32}{3}$

Thus $P\left ( t\right )=\frac{32}{3}\left ( 1.0460\right )^t$

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3 years ago

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What's -3 1/8 divided by -1 2/3?

choli [55]

1.875 is what you are looking for.

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3 years ago

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I BET YOU CANT SOLVE THIS...

e-lub [12.9K]

The answer is 61 7/20

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3 years ago

Does anybody know the answer to these???

Murrr4er [49]

Answer:

I dont know what that, but I think Its 3

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3 years ago

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