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Mashutka [201]
3 years ago
11

Please help me with all three! 25 Points!!

Mathematics
1 answer:
Gnoma [55]3 years ago
8 0

a. 28 * 63

28 (60) + 28 (3) or 20 (60) +20 (3) + 8 (60) + 8 (3)

1680 + 84=1764     1200 / 60 +480 +24=1764


b. 17(59)

17 (50) + 17 (9)   or  10 (50) + 10 (9) + 7 (50) +7 (3)

850 + 153=1003         500 + 90 + 63 =1003


c.458 (15)

458 (10) +458 (5)   or  10 (400) + 10 (50) + 10 (8) + 5 (400) +5 (50) + 5 (8)

4580 +2290 = 6870       400 + 500 + 80 + 2000 + 250 + 40 = 6870

My work is kinda confusing but hope it helped

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1200$ invested at a rate of 3.5% compounded quarterly; 4 years
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Step-by-step explanation:

<em>1st year</em>:

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<em>2nd year:</em>

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<em>3rd year:</em>

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<em>4th year:</em>

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