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Soloha48 [4]
3 years ago
13

Someone please help ASAP will give brainliest

Mathematics
1 answer:
Roman55 [17]3 years ago
6 0

Answer:

  sqrt(ac)

±----------  = b

    3c

Step-by-step explanation:

a= 9b^2 c

Divide each side by 9c

a/9c = 9b^2c / 9c

a/9c= b^2

Take the sqrt of each side

±sqrt(a/9c) = sqt(b^2)

Remember that sqrt (xy) = sqrt(x) sqrt(y)

±sqrt(a/c) * 1/ sqrt(9) = b

±sqrt(a)     1

--------- * ------ = b

sqrt(c)     3

Multiply  by sqrt(c)/ sqrt(c)

±sqrt(a)     sqrt(c)

--------- * -----------   = b

sqrt(c)     3sqrt(c)

±sqrt(ac)

----------  = b

3c

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Answer:

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Step-by-step explanation:

No need for a calculator.

Assuming that the equation is in the form y = ab^x, we can plug in points to get our equation. For ease, let's use (1,18) and (2,21). When plugging these points in, we get 18 = ab^1, 21 = ab^2. Now let's divide the equations to get rid of a: \frac{21 = ab^2}{18 = ab^1}  = \frac{21}{18}  =  \frac{7}{6}  = b. Now that we have b, we can plug in the value we just calculated to solve for a: 18 = a(\frac{7}{6} )^1, and solving for a, we get a = \frac{108}{7}.

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hope this helped! :)

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