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jok3333 [9.3K]
2 years ago
8

Find the area of the circle. Leave your answer in terms of pie.

Mathematics
1 answer:
lesya692 [45]2 years ago
8 0

Answer:

 A=   18.49π m²

Step-by-step explanation:

Given the diameter of 8.6  (which means the radius is half of that number; 4.3

Area = π × r²

Area = π × (4.3)²

Area = 18.49π m²

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5(3+t)-3(t+1) I don't understand how to do this problem.
shtirl [24]
Okay, just break it up so you're not overwhelming yourself or anything :)
So here, do it in steps-

Let's do 5(3 + t) first:
Distribute the 5, or in non-mathematical terms, just multiply 5 by 3 and t. This will give you 15 + 5t.

Now onto -3(t + 1):
Again, just multiply -3 by t and 1. This will come out to: -3t - 3.

*Note: the 3 is negative because it's "MINUS 3" in the original equation and remember that any number times a negative, if it isn't negative itself, will turn out to be negative.... (aka "-" x "-" = "+" | "+" x "+" = "+" | "-" x "+" = "-")*

ANYWAY
Now just put both answer together and you get:
15 + 5t -3t - 3. You can only add and minus the LIKETERMS (which are the things that are the same) - in this case, the liketerms are 15 and -3 ,,,, AND 5t and -3t.

15 - 3 = 12
5t - 3t = 2t

12 + 2t is your final answer. Hope that helps! :)
7 0
3 years ago
The equation (x + 6)^2 + (y + 4)^2 = 36 models the position and range of the source of a radio signal. Describe the position of
ElenaW [278]
A circle equation is :
( x - p )² + ( y - q )² = r², where p and q are coordinates of the center.
The position of the source is : ( - 6, - 4 ) and the range :
r² = 36   ⇒   r = 6
3 0
3 years ago
Read 2 more answers
Find the average rate of change of f on the interval [10, 60]. (round your answer to the nearest integer.)
Anuta_ua [19.1K]
If you round ten it would =0 and if you rounded 60 it would = 50
50 is the answer
3 0
3 years ago
Find the measure of
Sonbull [250]

Answer: 77°

Step-by-step explanation:

First we are going to find x and then insert it in 18x +5 to be able to get our <WZX

But to find x, we will have to apply the the exterior angle theorem

The exterior angle theorem state that : the exterior angle is equal to the sum of the two opposite interior anges

Using this theorem, then from the diagram above ;

18x + 5 = 48 + 8x - 3

we collect like term

18x - 8x = 48-3-5

10x = 40

Divide bothside by 10

10x/10 = 40/10

x = 4

but <WZX = 18x + 5

Then we substitute x=4

<WZX = 18(4) + 5

<WZX = 72 +5

<WZX =77

Therefore the measure of <WZX is 77°

8 0
4 years ago
Plywood comes in a variety of thickness for different uses put these in order from least to greatest
laiz [17]

Good evening,

Step-by-step explanation:

Look at the photo below for the Answer.

:)

5 0
3 years ago
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