3 years ago

PLEASE HELP ASAP 45 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Mathematics

1 answer:

sveta [45]3 years ago

3 0

The answer is C. I have the work for it in the image bellow

Hope this helped!

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Answer:

Step-by-step explanation:

If you go from 2 parts pineapple to 8, thats a 4x increase. Therefore 6x4=24 (6 from the Ginger)

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A square with side x is changing with time where x(t)=3t+1. What is rate of change of the area of the square when t=2 seconds.

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Answer:

Rate of change of the area of the square is 42 units at t = 2.

Step-by-step explanation:

We note that the area of the square is given by: $A(x) = x^2$ but we aim to find $\frac{dA}{dt}$ . But we can use the chain rule to pull out that dA/dt. Doing so gives us:

$\frac{dA}{dt} = \frac{dA}{dx} \times \frac{dx}{dt}.$

Now, $\frac{dA}{dx} = 2x$ (by the power rule and $\frac{dx}{dt} = 3.$

But since we have "x" and not "t", we want to find what x is when t = 2. Substituting t = 2 gives us x(2) = 3(2) + 1 = 7.

So, finally, we see that:

$\frac{dA}{dt} = 2(7) \times 3 = 14 \times 3 = 42.$

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how much money will you have after 5 years if you deposit $750 into an account that earns 4% simple annual interest?

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Step-by-step explanation:

$ 900 is the answer. as i shown in the attachment

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Step-by-step explanation:

You save ⅓ of entry fee, so you save 1.20 and you pay 2.40. We only really care about the 1.20 reduction. 5 / 1.2 = 4.16 so he must go 5 times to get the 5 back

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