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3 years ago

Pls help w math !

Mathematics

2 answers:

sesenic [268]3 years ago

5 0

The answer is -7 because -7-(-3)=4 therefore 4+(-7)=-3

Vsevolod [243]3 years ago

3 0

The answer is -7
4+-7=-3

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Find an exponential function that passes through each pair of points.<br><br>(2,1.75) & (-2,28)

dusya [7]

Answer:

$f(x) = 7\, ((1/2)^{x})$ .

Step-by-step explanation:

An exponential function is typically in the form $f(x) = a\, (b^{x})$ , where $a$ and $b$ ( $b > 0$ ) are constants to be found.

In this question:

$f(2) = 1.75$ means that $a\, (b^{2}) = 1.75$ .

$f(-2) = 28$ means that $a\, (b^{-2}) = 28$ .

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The number of the right-hand side of the second equation is larger than that of the first equation. Hence, divide the second equation with the first:

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$\displaystyle b = \frac{1}{2}$ .

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2 years ago

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3 years ago

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