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melomori [17]
2 years ago
11

A 210∘ arc has a length of 42π. Find the radius of the circle.

Mathematics
1 answer:
Phantasy [73]2 years ago
4 0

Answer:

20

Step-by-step explanation:

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Help me out!!
vekshin1

Answer:

~Exponential decay because the base is less than 1~

Step-by-step explanation:

I just took the test and got a 100% :) hope this helped! Good luck!

8 0
3 years ago
Please help me with this!
blsea [12.9K]

Answer:

180

Step-by-step explanation:

So, lets go over what we know:

5% of x = 9

Thinking of this in decimal form, this is:

0.05 * x = 9, or 0.05x = 9

To find the answer, we must multiply both sides to get 1x.

Since 0.05 is 1/20 of 1, we must multiply both sides by 20:

0.05x * 20 = 0 * 20:

1x = 180

So the answer is 180!

Hope this helps!

7 0
2 years ago
Evaluate the expression when a=4, b=−5, and c=−8. (−b)+c=
pshichka [43]

Answer:

-3

Step-by-step explanation:

( -  - 5) =  + 5 \\  + ( - 8) =  - 8 \\ 5 - 8 =  - 3

5 0
3 years ago
Read 2 more answers
Which conic section does this equation represent?
nadya68 [22]

Answer:

Hyperbola

Step-by-step explanation:

x^2-4x-y^2+6y-9=5

Lets write variables in square form using completing the square method

LEts group x  and y terms

(x^2-4x)+(-y^2+6y)-9=5

y^2 terms should be positive always, so we pull out negative sign from y^2

(x^2-4x)-(y^2-6y)-9=5

We have negative sign in the middle. so we will get equation in the form of

\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} =1

If we have negative sign in the middle then it is an hyperbola

8 0
3 years ago
Read 2 more answers
Find the distance between (-3, 7) and (-8, 5). Round to the nearest tenth if needed.
Wewaii [24]
The answer is D. 5.4


Distance:
_______________
= √[(-3)-(-8)]² + [(7)-(5)]²

= √(5)² + (2)²

= √25 + 4

= √29

= 5.38516.......


= 5.4 (nearest tenth)
5 0
3 years ago
Read 2 more answers
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