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Free_Kalibri [48]

4 years ago

15

A driveway is shaped like a parallelogram with a base of 28 ft and a height of 17 ft. covering the driveway with crushed stone w

ill cost 2.75 per square root. how much will it cost to cover the driveway with crushed stone?

1 answer:

timofeeve [1]4 years ago

6 0

1309 should be the anwser

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Find the value of X

emmasim [6.3K]

Answer: 20 i think srry if its wrong

Step-by-step explanation:

7 0

3 years ago

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work out the circumference of this circle take pie to be 3.142and give your number to 1 decimal place and the radius is 11.2cm

harina [27]

Circumference is 2*pi*r
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3 years ago

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The value of the definite integral / 212x – sin(x) dx / 122x-sin(x) is

blondinia [14]

Hi there!

$\boxed{= 70 + cos(12) - cos(2) \approx 71.26}$

$\int\limits^{12}_{2} {x-sin(x)} \, dx$

We can evaluate using the power rule and trig rules:

$\int x^n = \frac{x^{n+1}}{n+1}$

$\int x = \frac{1}{2}x^{2}$

$\int -sin(x) = cos(x)$

Therefore:

$\int\limits^{12}_{2} {x-sin(x)} \, dx = [\frac{1}{2}x^{2}+cos(x)]_{2}^{12}$

Evaluate:

$(\frac{1}{2}(12^{2})+cos(12)) - (\frac{1}{2}(2^2)+cos(2))\\= (72 + cos(12)) - (2 + cos(2))\\\\= 70 + cos(12) - cos(2) \approx 71.26$

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3 years ago

9. Which of the following do you need to know to determine the surface area and volume of a sphere?

Alexxx [7]

Answer:

A: radius of the sphere

Step-by-step explanation:

The formula for surface area is A = 4πr^2

With r being the radius and A the surface area.

For volume it is

V= (4/3)πr^3

6 0

3 years ago

NEED HELP!!!!!!!!!!!!!!!!! Math problem! Please help!

Elanso [62]

Answer:

You are correct, it is C.

8 0

3 years ago