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3 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]3 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]3 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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3 years ago

A household aquarium tank in the shape of a rectangular prism has a base length of 242424 inches (\text{in})(in)(, start text, i

mars1129 [50]

Answer:

The absolute change in the height of the water is 9.5 inches

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Given

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Required

The absolute change in the height of the water

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2 years ago

Find the missing value: x2 (squared) = 625 5 10 25 50

Alona [7]

$\bf x^2=625\implies x=\sqrt{625}\implies x=25$

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3 years ago

Read 2 more answers

If using the method of completing the square to solve the quadratic equation x2 - 6x – 7 = 0, which number would have to be adde

Vanyuwa [196]

Answer:

(-3)^2

Step-by-step explanation:

You add 7 on both sides, giving you x^2 - 6x = 7

Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7

The answer will be (-3)^2 for this question, but this is not the full solution.

Hope this helped. Good luck on the rest!

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2 years ago