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Makovka662 [10]

3 years ago

13

Lisa has 5/8 pound of grapes. 3/4 of the grapes are green. The rest are purple. She divides the purple grapes equally among 10 f

riends. How much of the purple grapes does each friend get?

1 answer:

Aleksandr-060686 [28]3 years ago

3 0

if 3/4 of the grapes are green, than 1/4 are purple.

5/8*1/4=5/32

5/32 *1/10= 1/64

Each friend gets 1/64th of a pound of grapes

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Cost of an oil change: $19.95<br><br> Discount: 33%<br><br> What is the new cost?

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3 years ago

Compute the amount of interest earned in the following simple interest problem.

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Step-by-step explanation:

P = $295

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4 0

3 years ago

A ball is thrown directly up in the air from a height of 5 feet with an initial velocity of 60 ft/s. Ignoring air resistance, ho

Mice21 [21]

Answer:

3.8 seconds

Step-by-step explanation:

Given equation

$h= -16t^2 + 60t + 5$

When the ball hits the ground then height is 0

So we replace h with 0 and solve for t

$0= -16t^2 + 60t + 5$

a= -16 , b= 60 and c= 5

Apply quadratic formula to solve for t

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

= $\frac{-60+\sqrt{60^2-4\left(-16\right)\cdot \:5}}{2\left(-16\right)}[/tex[tex]=\frac{-60+-\sqrt{3920}}{-32}$

$=\frac{-60+-28\sqrt{5}}{-32}$

$=\frac{4(-15+-7\sqrt{5})}{-32}$

$=\frac{(-15+-7\sqrt{5})}{-8}$

Now make two fractions and solve for x

t= $-\frac{7\sqrt{5}-15}{8}$ =-0.0815

t= $\frac{7\sqrt{5}+15}{8}$ =3.83

So answer is 3.8 seconds

4 0

3 years ago