3 years ago

How do you divide thirty one point five by ten?

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

6 0

All divisions by powers of ten entail moving the decimal point left by the number of zeroes. So 31.5/10 = 3.15.

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Fofino [41]

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3 years ago

How did estimate help you place the decimsl point in a product correctly.

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After you have multiplied but you have all these numbers, look to see how many decimal places the numbers you have multiplied.
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3 years ago

The exponential function that models cell duplication in a lab is f(t) = 2^ t+2 where f(t) is the number of cells after time t (

o-na [289]

ANSWER

$11.29 \: hours$

EXPLANATION

The exponential function that models cell duplication in the lab is given as

$f(t) = {2}^{t + 2}$

We want to determine the time it will take for the cells to increase to
$10,000.$

In other words, we want to find the value of
$t$
when
$f(t) = 10,000$

This gives us the equation,

$10,000 = {2}^{t + 2}$

Recall that,

${a}^{m + n} = {a}^{m} \times {a}^{n}$

We apply this property to the right hand side to obtain,

$10,000 = {2}^{t} \times {2}^{2}$

This implies that,

$10,000 =4 \times {2}^{t}$

We divide both sides by 4 to get,

$2500 = {2}^{t}$

We take the antilogarithm of both sides to base 10 to get,

$t = log_{2}(2500)$

This implies that,

$t = 11.29 \: hours$
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4 years ago

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<span>t=20.62 seconds </span>

<span>20.62 seconds</span>

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3 years ago

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sukhopar [10]

The correct answer is D. You can solve this by multiplying the values.