3 years ago

The drama club is washing cars for a fundraiser if the rate continues how many cars will they wash in 4 hours

Mathematics

1 answer:

nlexa [21]3 years ago

4 0

9 Cars washing in 4 hours

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In a weightless environment, an astronaut lose about 1.5% calcium in their bodies per month. Suppose some astronauts flew to Mar

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12.3 months

Step-by-step explanation:

You want the number of months (m) such that ...

1 - 17% = (1 -1.5%)^m

Taking logarithms:

log(0.83) = m·log(0.985)

m = log(0.83)/log(0.985) ≈ 12.3 . . . . months

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You go to a school dance. There is an entrance fee, and there are slices of pizza for sale. After having 1 slice of pizza, you h

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3 years ago

What is the slope of (-5,-1) (5,5)? Explain.

ArbitrLikvidat [17]

Step-by-step explanation:

$slope = \frac{ - 1 - 5}{ - 5 - 5} = \frac{ - 6}{ - 10} = \frac{ 3}{ 5} \\$

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3 years ago

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A boat that costs $8550 decreases in value by 12% per year. How much will the boat be worth after 3 years?

erastovalidia [21]

You have to take $8,550 times 0.12 (12%) to find out the number it is being decreased by.
8,550 x 0.12 = 1,026
And then, you have to subtract 1,026 from 8,550 three times for three years and your answer becomes 5,472.
$5,472

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3 years ago

Which equation describes a line parallel<br> to y= 4x+ 5 through point (-2, 1)?

Tema [17]

Hi there!

For a line to be PARALLEL, it must contain the same slope.

The given line has a slope of 4, so we can use the point-slope formula to solve:

$\large\boxed{y - y_1 = m(x - x_1)}$

y1 = y-coordinate of given point

x1 = x-coordinate of given point

m = slope

Plug in the values:

$y - 1 = 4(x - (-2))\\\\y - 1 = 4(x + 2)$

Simplify:

$y - 1 = 4x + 8\\\\\boxed{y = 4x + 9}$

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2 years ago