Answer:
Step-by-step explanation:
Step 1. Calculate the common ratio
a₁ = 250
a₂ = 100
a₃ = 40
a₄ = 16
The common ratio is
a₃/a₂ = 40/100 = 0.4
Step 2. Write the formula for the series
The formula for the nth term of a geometric sequence is
aₙ = a₁rⁿ⁻¹
Thus, the formula for the series is
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One common denominator is 45
She could use the following methods:
8 dimes
16 nickles
2 quarter and 3 dimes
2 quarters and 6 nickles
so, 4 combos
<u>I used trial and error. It's a great method.</u>
35 blue shirts
20 gray shirts
35*12=420
20*10=200
420+200=620.
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