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3 years ago

9

If 1 gallon of paint covers 360 sq ft, how many gallons will be needed to cover 2650 sq ft with 2 coats. Round to the next whole

number.

1 answer:

KonstantinChe [14]3 years ago

6 0

Answer:

15 gallons

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago

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3 years ago

The base of a solid is the region in the first quadrant between the graph of y=x2 and the x -axis for 0≤x≤1 . For the solid, eac

nata0808 [166]

Answer:

The volume of the solid is π/40 cubic units.

Step-by-step explanation:

Please refer to the graph below.

Recall that the area of a semi-circle is given by:

$\displaystyle A=\frac{1}{2}\pi r^2$

The volume of the solid will be the integral from <em>x</em> = 0 to <em>x</em> = 1 of area A. Since the diameter is given by <em>y</em>, then the radius is <em>y/2</em>. Hence, the volume of the solid is:

$\displaystyle V=\int_0^1\frac{1}{2}\pi \left(\frac{y}{2}\right)^2\, dx$

Substitute:

$\displaystyle V=\frac{1}{2}\pi\int_0^1\left(\frac{x^2}{2}\right)^2\, dx$

Simplify:

$\displaystyle V=\frac{1}{2}\pi \int_0^1\frac{x^4}{4}\, dx$

Integrate:

$\displaystyle V=\frac{1}{2}\pi \left[\frac{x^5}{20}\Big|_0^1\right]$

Evaluate:

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4 0

3 years ago

Pi High school ordered 40 science books. The next week, the school ordered 30 algebra books. The bill for the first order was $3

Darina [25.2K]

40s=360+30a
40s+30a=$3960

40s=360+30a
40s/40=360+30a/40
s = 9+3/4a

40(9+3/4a) +30a=$3960
360+30a+30a=$3960
360+60a=$3960
360-360+60a=$3960
60a=$3960
60a/60 = $3960/60
a= $60
The algebra book is $60

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3 years ago