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cheyennemitchel2680
22.07.2019 •
Mathematics
Answer these 1-4 answer all of them. thansk
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Ответ:
percentage change = ((new value)/(original value) - 1) × 100%
Problems 1–3 all use this formula.
1. (3.25/.99 - 1)×100% ≈ 228.3%
2. (2.75/3.25 - 1)×100% ≈ -15.4%
3. (2.75/.99) - 1)×100% ≈ 177.8%
4. The formula for simple interest is
I = Prt
where P is the principal amount, r is the rate, t is the number of periods, and I is the interest earned. Substitute the given values and solve for t.
400 = 5000·0.04·t
400/200 = t = 2
The money was in the bank for 2 years.
Ответ:
68 and 43 are the answer