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emmabarnett817
27.12.2021 •
Mathematics
2(1+a) * 5(1+a)
help u u want to help or else continue helping
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Ответ:
Step-by-step explanation:
We simply multiply what there is to multiply:
10(1+a)^2 = 10a^2 + 20a + 10
Ответ:
=10+10a+10a+10a^2
=10+20a+10a^2
Ответ:
22 1/2 = [(22×2) + 1] ÷ 2 = 45/2
So (45/2)mi ÷ (1/3)hr is the same as (45/2) × (3/1), or (45×3)/2 = 135/2, which is 67 1/2, or 67.5 mi/hr (mph).