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neonofarm [45]
3 years ago
11

Find the radius of a circle that has an area of 212​

Mathematics
2 answers:
kobusy [5.1K]3 years ago
5 0

Answer:

The answer should be: r ≈ 8.21

Cloud [144]3 years ago
3 0

Answer:

how to do this morning cause of death in a store is a great way I

Step-by-step explanation:

what's your favorite movie in this series or a

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HELP PLEASE ILL GIVE YOU BRAINLEST IF U GIVE ME THE CORRECT ANSWER FOR THE QUESTION IN THE PIC
anastassius [24]

Answer:

b. <em>f</em>(3.5) = 52

Hope this helps!

3 0
2 years ago
Describe all situation where verticals angles are also supplementary?
Helen [10]
See my previous answer to this same question. the vertical angles have to be right angles
6 0
3 years ago
Read 2 more answers
The probability that it will be at least 70°on Tuesday is 0.65. If it is at least 70°, there is a 0.8 chance that Mrs. Collins w
Zielflug [23.3K]
P(> or =70) =0.65
P(Collins inside) =0.80
P(not 70) = 1-P(70) =>0.35
P(Collins inside) = 0.1
Then P(70 AND Collin inside) .65 x .8 =0.52
P( not 70 AND Collin Outside = 0.35 x 0.1=0.035
TOTAL Possibility [(70 AND Inside) OR (not 70 AND Outside):
=0.52 + 0.034 =0.555


 

7 0
3 years ago
The power generated by an electrical circuit (in watts) as a function of its current x xx (in amperes) is modeled by P ( x ) = −
marysya [2.9K]

Given:

The power generated by an electrical circuit (in watts) as a function of its current x (in amperes) is modeled by

P(x)=-15x(x-8)

To find:

The current which will produce the maximum power.

Solution:

We have,

P(x)=-15x(x-8)

P(x)=-15x^2+120x

Differentiate with respect to x.

P'(x)=-15(2x)+120(1)

P'(x)=-30x+120      ...(i)

To find the extreme point equate P'(x)=0.

-30x+120=0

-30x=-120

Divide both sides by -30.

x=4

Differentiate (i) with respect to x.

P'(x)=-30(1)+(0)

P'(x)=-30 (Maximum)

It means, the given function is maximum at x=4.

Therefore, the current of 4 amperes will produce the maximum power.

7 0
3 years ago
A circle has an arc of length 20π that is intercepted by a central angle of 180°. What is the radius of the circle?
Bond [772]

Answer:

10π

Step-by-step explanation:

RULE:  The angle measure of the central angle is congruent to the measure of the intercepted arc.  

RULE:  Central Angle = Arc length

Given:  

Arc length (20 π) = central angle (180)

we know 180 degrees is a straight line, thus a semi-circle is created.  This would be the diameter.  

1/2 diameter is the radius.  20π/2 is the radius.  

10π

8 0
3 years ago
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