3 years ago

URGENT -

1 answer:

laiz [17]3 years ago

7 0

Answer:

The chances are 36.8% that a random student has an A

Step-by-step explanation:

There are 19 total students and 7 of them have an A. Divide 7 by 19 and convert the decimal value into a percentage.

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nalin [4]

The phrase gives you an interval where the extremes are included.

The intervals may be indicated in several ways.
7.2 ≤ x ≤ 7.6

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3 years ago

Karolina [17]

-2x(4x² - 5x + 3) Distribute/multiply -2x into (4x² - 5x + 3)

(4x²)(-2x) - (5x)(-2x) + (3)(-2x)

-8x³ + 10x² - 6x

Your answer is the 3rd option

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3 years ago

Mumz [18]

Without that value, we can't solve your problem, unless you are looking for an algebraic equation.

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3 years ago

snow_lady [41]

Answer:

25 sheets of plywood will be needed

Step-by-step explanation:

Each sheet of plywood measures $4ft*8ft=32ft^{2}$ .

We have to cover the surface of the house, minus the surface of the hole of the stairs.

$Surface _{to cover} = Surface _{house} -Surface _{hole}= (28ft*30ft)-(12ft*4ft)= 840ft^{2}-48ft^{2}=792ft^{2}$

To know how many sheets will be needed, we divide the surface to be covered by the surface of each sheet

$Sheets_{needed} =\frac{Surface _{house}}{Surface _{sheet}} =\frac{792ft^{2}}{32\frac{ft^{2}}{sheet} } = 24,75 sheets$

As we can't buy 0,75 of a sheet, we round it up, i.e. we will need 25 sheets of plywood for subflooring.

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3 years ago

Ghella [55]

4x is your answer to your question

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3 years ago