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dem82 [27]
3 years ago
12

Help me please!!!! It's been 2 hours and I can't figure these out!!!!! D:

Mathematics
1 answer:
Eva8 [605]3 years ago
8 0
66 x 58 = 3,828
31 x 56 = 1,736
88 x 49 = 4,312
97 x 43 = 4, 171
74 x 66 = 4,884
28 x 80 = 2,240
47 x 60 = 2,820
97 x 62 = 6,014
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Step-by-step explanation:

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If a man earns $420 interest in one year at 7%, what was the amount of money invested?
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4 0
3 years ago
P and W are twice-differentiable functions with P(7)=2(W(7)). The line y=9+2.5(x-7) is tangent to the graph of P at x=7. The lin
fiasKO [112]

Using the product rule, we have

m(x) = x W(x) \implies m'(x) = xW'(x) + W(x)

so that

m'(7) = 7W'(7) + W(7)

The equation of the tangent line to <em>W(x)</em> at <em>x</em> = 7 has all the information we need to determine <em>m'</em> (7).

When <em>x</em> = 7, the tangent line intersects with the graph of <em>W(x)</em>, and

<em>y</em> = 4.5 + 2 (7 - 7)   ==>   <em>y</em> = 4.5

means that this intersection occurs at the point (7, 4.5), and this in turn means <em>W</em> (7) = 4.5.

The slope of this tangent line is 2, so <em>W'</em> (7) = 2.

Then

m'(7) = 7\cdot2 + 4.5 = \boxed{18.5}

4 0
2 years ago
18 POINTS!!! PLEASE I JUST NEED THIS QUESTION
solong [7]

Answer:

the answer for this question is c

3 0
3 years ago
The sum of two numbers is 12. One number is prime and the other is composite. What are the numbers?
kompoz [17]
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4 0
3 years ago
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