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12345 [234]
3 years ago
15

4. A class has 24 boys and 32 girls, what is the ratio of boys to girls? What is the ratio of boys to girls to

Mathematics
1 answer:
vichka [17]3 years ago
5 0
3:4 I think????? Hope this helps!
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Between the two answer is 3 hundred
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The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation h = -16t2 + h0, where
Reil [10]

Answer:

The rock will reach to the canyon floor in 3.99 seconds.

Step-by-step explanation:

The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation

h=-16t^2+255

Where, h0 is the initial height of the object.

It can be written as

h=-16t^2+0t+255

The height of the object is zero if it will reach to the canyon floor.

0=-16t^2+0t+255

Quadratic formula:

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

Here a=-16, b=0 and c=255.

t=\frac{-0\pm \sqrt{0^2-4(-16)(255)}}{2(-16)}

t=\frac{\pm \sqrt{16320}}{-32}

t=\pm 3.99

Time cannot be negative, therefore the rock will reach to the canyon floor in 3.99 seconds.

3 0
3 years ago
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What is the solution to this equation?
horsena [70]

Answer: 15

Step-by-step explanation:

2x+3(x−10)=45

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(2x+3x)+(−30)=45

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5x−30=45

5x−30+30=45+30

5x=75

5x

5

=

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2 years ago
Jeanine Baker makes floral arrangements. She has 12 different cut flowers and plans to use 4 of them. How many different selecti
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Answer:

12/4

=3 sections

Step-by-step explanation:

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The answer is B.
28x2 then the remaining 3/4 equals to 21 miles so add first to inches then the remaining. 28+28+21=77
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