Please help and write a proper answer I really need it. Thanks.

Mathematics

1 answer:

Sveta_85 [38]2 years ago

5 0

Answer:

To find the surface area of a cone, you need to calculate the cone’s base and the lateral surface area.

Since the base of a cone is a circle, then the base area (B) of a cone is given as:

Base area of a cone, B = πr²

Where r = the base radius of the cone

Step-by-step explanation:

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Which is the value of this expression when p=-2 and q=-1?

saul85 [17]

Answer:

D. 4

Step-by-step explanation:

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2 years ago

A 18 foot ladder is leaning against a wall as shown

Inga [223]

I'm guessing the diagram shows a ladder leaning against a wall, making a right angle triangle with respect to the ground and the wall.

So, the wall's height is going to be the 'h', which will also be the 'opposite side' from the angle ϴ which is made from the ladder and the ground.
The ladder's length (18 foot) is going to be the 'hypotenuse' side and the other remaining side will be the 'adjacent'.

Now, once you've sorted out which side is which, we have to find the h (opp), and according to SOH CAH TOA, we will choose Sinϴ = opp/hyp.
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To find angle ϴ, simply take the inverse of Sinϴ= h/18... and you'll get ϴ = sin-1 (sin inverse) h/18

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3 years ago

Please help! (will mark as brainliest)

ddd [48]

Answer:

2x + 10

Step-by-step explanation:

the sum of two times a number means # times 2, and the number is unknown so you use x, and ten means +10 so that means that, THe sum of two times number and ten is

2x+10

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2 years ago

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weqwewe [10]

Answer:

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Step-by-step explanation:

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2 years ago

Hi! Please explain how you got the answer, thanks! :)

viktelen [127]

D
p would be how many hours Colin read for and if you multiply it you would get the amount of pages they already read and you would have to subtract it from the amount of pages in total

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2 years ago