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prisoha [69]
3 years ago
5

It’s been a long summer. How do you find a percent of a fraction?

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0
Do you have a calculator? If so, divide the numerator by the denominator. For example... 2/7: take 2 divided by 7 and you get 28.6%
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Which expression is equivalent to the expression 4(6+y)+7?
natita [175]

Answer:

31 + 4y

Step-by-step explanation:

4(6+y)+7

Expand the brackets.

24+4y+7

Rearrange.

4y + 24 + 7

Add the like terms.

4y + 31

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Determine the value of z so that the area under the standard normal curve .0500
cluponka [151]
Z for the 5th percentile is about -1.6449

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If a projectile is launched vertically upward from 800 ft above the ground with an initial velocity of 80 ft per second, its hei
tiny-mole [99]

Hello!

10 seconds to return to the ground.

7 seconds to reach 576 feet above the ground.

Find the amount of time taken to reach the ground by setting the equation equal to 0:

0 = -16t² + 80t + 800

Factor out -16 from the equation:

0 = -16(t² - 5t - 50)

Factor the terms inside of the parenthesis:

0 = -16(t - 10)(t + 5)

Find the zeros:

t - 10 = 0

t = 10

t + 5 = 0

t = -5

Time can only be positive in this instance, so the correct answer is 10 sec.

Find the time by substituting in 576 for the height:

576 = -16t² + 80t + 800

Subtract 800 from both sides:

-224 = -16t² + 80t

Rearrange:

0 = -16t² + 80t + 224

Simplify:

0 = -16(t² - 5t - 14)

0 = -16(t - 7)(t + 2)

t = 7 seconds.

8 0
3 years ago
Plzzz help me with this ​
NeX [460]
You would say that the side ADAC is congruent to ABCA because the two triangles where it is split in half are congruent as well.
3 0
2 years ago
I NEED HELP !!!!
horsena [70]

Answer:

2,3,5,6 on Edge 2020

Step-by-step explanation:

8 0
2 years ago
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