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Snezhnost [94]
3 years ago
9

Sam opened a money-market account that pays 2% simple interest. He started the account with 7000 dollars and made no further dep

osits. When he closed the account, he had earned 560 dollars in interest. How long did he keep his account open?
Mathematics
1 answer:
Effectus [21]3 years ago
4 0

Answer:

4 years

Step-by-step explanation:

560 = 7000 × 2/100 × t

t = 4

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Hello, we know that the z complex solutions of

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3 years ago
9 Quesions, 30 Points!!!! PLEASE HELP!
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Note: I'm afraid I can't put the work for the answers, for lack of time =/
============================================================

1. 0 or -3

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9. Substitute 0 for h in "h = -16x^2 + 16x" then solve for x
0 = -16x^2 + 16x

<span>Subtract -16x^2+16x from both sides.
</span><span>0−<span>(<span><span>−<span>16x2</span></span>+16x</span>)</span></span>=<span><span><span>−<span>16<span>x2</span></span></span>+<span>16x</span></span>−<span>(<span><span>−<span>16x2</span></span>+16x</span>)
</span></span><span><span>16<span>x2</span></span>−<span>16x</span></span>=<span>0
</span>
Factor the left side of the equation
<span><span>16x</span><span>(<span>x−1</span>)</span></span>=<span>0
</span>
Set factors to equal 0
<span><span>16x</span>=<span><span><span>0<span> or </span></span>x</span>−1</span></span>=<span>0
</span>x = 0 or x = 1
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