3 years ago

If 3 notebooks cost $3.51, how much would 7 notebooks cost?

Mathematics

2 answers:

Ket [755]3 years ago

8 0

Well, you would first divide 3÷ 3.15 Do you know what that would give you?

pychu [463]3 years ago

7 0

First, divide $3.51 by 3

3.51/3 = 1.17

Now, multiply the product by 7 to get the answer.

7 x 1.17 = 8.19

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2 years ago

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Alex17521 [72]

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<em>[using calculus] </em>When the function h(t) reaches its maximum value, its first derivative will be equal to zero (the first derivative represents velocity of the ball, which is instantaneously zero). We have $h'(t) = -32t + 48$ , which equals zero when $t = 3/2 = 1.5$ . The ball therefore reaches its maximum height when t = 1.5. To find the maximum height, we need to find h(1.5), which is 64 feet.

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