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valina [46]
3 years ago
7

Two algebra questions! please help :(

Mathematics
1 answer:
Fiesta28 [93]3 years ago
8 0
The answer is B. h=<span>V<span>2π<span>r<span>2</span></span></span></span>
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In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years. Assuming that life expectancy bet
Darya [45]

Answer:

49145 years

Step-by-step explanation:

In a certain country the life expectancy for women in 1990 was 45 and in 2000 it was 85?years.

Assuming that life expectancy between 2000 and 2100 increases by the same percentage as it did between 1900 and 2000,what will life expectancy be for women in 2100?

In 10 years, the expectancy increased by 85/45 = 17/9

between 2000 and 2100, it will increas by 10 time 10 years, so expected expectancy is  85*(\frac{85}{45})^{10} = 49145  years

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What is the value of the expression -5(3+4)?
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Kierra drew a line that is 3 times four-sevenths inches long. Which fraction represents the same length?
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3 × \frac{4}{7}

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Which equation represents the graphed function?
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y = -2x + 3

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If you use the formula to find slope, which is y2-y1 over x2-x1, you can find the slope is -2. the only equation that has -2 as the slope is the first one, y = -2x + 3. hope I helped!

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