4 years ago

What value of a makes the equation true? 1.7a+0.3a=4/5 A) a=2/5 B) a=−1 1/5 C) a=2 4/5 D) a=1 3/5

Mathematics

2 answers:

Ulleksa [173]4 years ago

7 0

I can help clarify Anna's answer. 0.4, which for some reason you did not know, is equal to 2/5, or answer choice (A).

7nadin3 [17]4 years ago

6 0

First you want to collect the like terms, 2a=45 , then divide both sides of the equation by 2 which is a=2/5 , or a=0.4

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shepuryov [24]

Answer: $t_{11}=-2187$

Step-by-step explanation:

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that is

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divide equation 2 by equation 1 , that is

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$t_{11}=ar^{10}$

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$t_{11}=-2187$

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4 years ago