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3 years ago

Which of the following quadratic solutions has the following solution

Mathematics

1 answer:

castortr0y [4]3 years ago

4 0

Answer:

The first and second one

Step-by-step explanation:

plug in x :)

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Which is the graph of f(x)=2(3)^x

likoan [24]

Let's plug the values and see which couple satisfy the equation: since $y = 2\cdot 3^x$ , if we plug the values from the first option $(x,y)=(1,6)$ we have

$6 = 2\cdot 3^1 = 2\cdot 3$

which is correct.

If we plug the values from the second option $(x,y)=(1,9)$ we have

$9 = 2\cdot 3^1 = 2\cdot 3$

which is not correct

If we plug the values from the third option $(x,y)=(2,9)$ we have

$9 = 2\cdot 3^2= 2\cdot 9$

which is not correct

If we plug the values from the fourth option $(x,y)=(2,12)$ we have

$12 = 2\cdot 3^2= 2\cdot 9$

which is not correct

So, the answer is the first one.

3 0

3 years ago

Jerry is mowing his lawn .it takes him 1/6 of an hour to mow 3/20 of his years .what portion of the yard does jerry now per hour

Ber [7]

Given that Jerry mows 3/20 yards of lawn in 1/6 hour.

Now we have to found how much Jerry can mow per hour.

We know that "work" and "time" are in direct proportion so we can setup the ratio of work and time to easily find the required work.

$\frac{Portion \; \; of \; \; lawn \; \; mowed}{time}=\frac{\frac{3}{20}}{\frac{1}{6}}$

$\frac{Portion \; \; of \; \; lawn \; \; mowed}{1}=\frac{\frac{3}{20}}{\frac{1}{6}}$

$Portion \; \; of \; \; lawn \; \; mowed=\frac{3}{20}*\frac{6}{1}$

$Portion \; \; of \; \; lawn \; \; mowed=\frac{18}{20}$

$Portion \; \; of \; \; lawn \; \; mowed=\frac{9}{10}$

Hence final answer is $\frac{9}{10}$ yards.

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The answer is zero hope that helps

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