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Marrrta [24]
3 years ago
7

How do you estimate21× 78

Mathematics
1 answer:
finlep [7]3 years ago
8 0

21 *78=

20 * 80=

1600 as an estimate


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5-i

Step-by-step explanation:

Product=multiplication

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Find the missing endpoint if one endpoint is at (5.-7) and the midpoint is at (15.1).
ioda

Answer:

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Step-by-step explanation:

<h3>Given </h3>
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<h3>To find</h3>
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<h3>Solution</h3>

<u>Midpoint formula:</u>

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7 0
3 years ago
What is the inverse of f(x)= 3x-9
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If f^{-1}(x) is the inverse of f(x), then

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composing with the inverse function gives

f\left(f^{-1}(x)\right) = 3f^{-1}(x) - 9 = x

Solve for the inverse:

3f^{-1}(x)-9 = x \\\\ 3f^{-1}(x) = x+9 \\\\ \boxed{f^{-1}(x) = \dfrac x3 + 3}

5 0
3 years ago
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