3 years ago

I need help with pre algebra

Mathematics

1 answer:

Mariana [72]3 years ago

3 0

Be more specific! What is your question?

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How do the average rates of change for f(x) = -0.5x² and g(x) = -1.5x² over the interval -5 ≤ x ≤ -2 compare?

masha68 [24]

Pick an x-value between the interval givens. I’ll choose “1”. If you sub in one for both f(x) and g(x) you get that f(1) = -1.5 and g(1) = -0.5. Now you can divide f(1) by g(1) to get average rate of change. -1.5/-0.5 = 3.

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2 years ago

A water tanks can hold 234 cubic feet of water.How many gallons can the water tank hold

Veseljchak [2.6K]

1 cubic foot has 7.48 gallons of water.

Volume of water tank = 234 cubic feet

So, the number of gallons are = $234\times7.48=1750.32$

Hence, the water tank can hold 1750.32 gallons of water.

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3 years ago

SHOW YOUR WORK!! What is the distance between point A (-3, -2) and Point B (4, -7)?

gulaghasi [49]

Answer: $\bold{\sqrt{74}}$

Step-by-step explanation:

$\text{Use the distance formula: }d_AB=\sqrt{(x_A-x_B)^2+(y_A-y_B)^2}\\where\ (X_A, y_A)=(-3, -2)\\and\ (x_B,y_B)=(4, -7)\\\\\\d_AB=\sqrt{(-3-4)^2+[-2-(-7)]^2}\\\\.\quad =\sqrt{(-7)^2+(5)^2}\\\\.\quad =\sqrt{49+25}\\\\.\quad =\boxed{\sqrt{74}}$

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4 years ago

Expand or simplify 3c(5+c) -2(3c-7)

Luden [163]

3c(5+c) -2(3c-7)
15c+3c^2-6c+14
9c+3c^2+14

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3 years ago

Read 2 more answers

Whrite 2 diffrent pairs of decimals whose sums are 14.1 .One pair sould involve regrouping

wariber [46]

7.1 + 7= 14.1
6.3+7.8= 14.1

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3 years ago