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77julia77 [94]
3 years ago
11

A high school has 900 students. In a

Mathematics
1 answer:
postnew [5]3 years ago
6 0

Answer:

135

Step-by-step explanation:

simply You're asked 15% of 900 so

900 x 15/100 =135

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A helicopter leaves an airport and flies south at 180 mi/h. Thirty minutes later, an airplane leaves the airport and follows the
stira [4]

Answer:

36 minutes

Step-by-step explanation:

helicopter 1 is ahead of helicopter 2 by 90 miles

the difference in their speeds is 150 mph

90/150=3/5 of hour

3/5*60=36 minutes

8 0
3 years ago
line. Complete parts​ (a) through​ (c) below. Red Yellow Green Yellow A circular spinner is divided equally into the following l
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Answer:p

Step-by-step explanation:

Gnngv

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3 years ago
6) Evaluate for x = 3:<br> 3•4x/2
Nikolay [14]

Answer:

18

Step-by-step explanation:

3×4(x)/2

Plug in 3 to x

3×4(3)/2

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5 0
3 years ago
9. Water is added to two containers for 16 minutes. The equations below model the ounces of
Vladimir [108]

The two containers hold 328 ounces at the they hold same amount of water.

<u>Step-by-step explanation:</u>

The equations below model the ounces of  water, y, in each container after x minutes.

y = 16x + 104

y = -2x^{2} +40x+160

At the time after the start when the containers hold  the same amount of water, the two equations must be equal.

⇒ 16 x + 104 = -2x^{2}  + 40 x + 160

The first step is to divide everything by 2 to make it simplified.

⇒ 8 x + 52 = - x^2 +20 x + 80

Now put everything on the left .

x^2 + 8 x - 20 x + 52 - 80 = 0

Add the like terms together to further reduce the equation

x^2 - 12 x - 28 = 0

Factorizing the equation to find the roots of the equation.

Here, b = -12 and c = -28

where,

  • b is the sum of the roots ⇒ -14 + 2 = -12
  • c is the product of the roots ⇒ -14 × 2 = -28
  • Therefore, (x-14) (x+2) = 0
  • The solution is x = -2 or x = 14

Take x = 14  and substitute in any of the given two equations,

⇒ y = 16(14) + 104

⇒ y =224+104

⇒ 328 ounces

∴ The two containers hold 328 ounces at the they hold same amount of water.

5 0
3 years ago
Use this figure to find the value of ∠FOD
mixer [17]
The answer is B
Since you know that BOD is a right angle add 12 And 15 and subtract your answer from 90

8 0
3 years ago
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