josie311251
27.04.2021 •
Mathematics
Select ALL the expressions that represent the area of the large rectangle.
15 + 5b
3(5 + b)
5 (b + 3)
3 * 5 + 3b
5b + 15
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Ответ:
-24.97 to the nearest hundredth.
Step-by-step explanation:
First term a1 = -5.
Common ratio r = -4/-5 = 4/5.
Sum of n terms = a1 * [1 - (4/5)^n] / (1 - 4/5)
Sum of 30 terms = -5 * ( 1 - (4/5)^30) / 1/5
= -25 * ( 1 - (4/5)^30)
= -24.97