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3 years ago

How many gallons of paint is needed for a 8x9 bedroom with 8 foot ceilings?

Mathematics

1 answer:

Kay [80]3 years ago

4 0

You will need about 2 gallons of paint

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Two consecutive numbers whose squares differ by 25

yaroslaw [1]

<span>An example of this might be 7 and 8. 7 multiplied by 7 to find the square root is 59, and 8 multiplied by 8 to find the square root is 64. 64 subtract 49 equals 25, so there you have your answer.</span>

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4 years ago

1584 feet in 3 min 1 mile in

kvv77 [185]

1 mile is 5280ft so divide 1584 and 5280. you would get 3 infinite so the answer is 9minutes and 20 seconds

3 0

3 years ago

Given thatf(x)=x5−x,findf(−15).

bekas [8.4K]

The answer is 60. You plus 15 into x

6 0

3 years ago

If Fred feeds 12 horses for two weeks with 25 bales of hay, how many bales of hay does he need to feed 15 horses for two weeks?

Dvinal [7]

Answer:

He needs 31.25 bales of hay to feed 15 horses for two weeks

Step-by-step explanation:

This question can be solved using a rule of three.

25 bales of hay feed 12 horses. How many feed 15 horses?

12 horses - 25 bales of hay

15 horses - x bales of hay

$12x = 25*15$

$x = \frac{25*15}{12}$

$x = 31.25$

He needs 31.25 bales of hay to feed 15 horses for two weeks

7 0

3 years ago

Find the line integral of f(x, y) = y e^X^2 along the curve r(t) = 3t i - 4t J, -2 lessthanorequalto t lessthanorequalto -1. The

Semenov [28]

$\vec r(t)=3t\,\vec\imath-4t\,\vec\jmath$

$\implies\left\|\dfrac{\mathrm d\vec r(t)}{\mathrm dt}\right\|=\|3\,\vec\imath-4\,\vec\jmath\|=\sqrt{3^2+(-4)^2}=5$

The line integral of $f(x,y)$ along the curve $C$ parameterized by $\vec r(t)$ is

$\displaystyle\int_Cf(x,y)\,\mathrm ds=\int_{-2}^{-1}f(3t,-4t)\left\|\dfrac{\mathrm d\vec r(t)}{\mathrm dt}\right\|\,\mathrm dt=-20\int_{-2}^{-1}te^{9t^2}\,\mathrm dt$

Substitute $u=9t^2$ so that $\mathrm du=18t\,\mathrm dt$ . Then

$\displaystyle\int_Cf(x,y)\,\mathrm dS=-\frac{20}{18}\int_{36}^9e^u\,\mathrm du=\frac{10}9\int_9^{36}e^u\,\mathrm du=\boxed{\frac{10}9(e^{36}-e^9)}$

8 0

4 years ago