MATHEMATICS HIGH SCHOOL

The area of a circular sun spot is growing at a rate of 600 km2/sec. (a) How fast is the radius growing at the instant when it equals 4,000 km?

Answers

Answer 1
Answer: 14 sec becauseIn 2sec=600In4 sec=1200In6 sec =1800In 8sec =2400In10 sec=3000In12sec=3600In 14sec=4000In 14seconds it covers 4000

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Sarah has been training for a marathon, which will cover a distance of 42.195 km. In trainingshe has consistently run 1km each 6 minutes. How long will it take Sarah to complete the
Marathon if she runs at this pace consistently throughout the race?

Answers

Answer:

4 hours 21 minutes 17 seconds.

Step-by-step explanation:

1km = 6 minutes

42.195km = ?

42.195 × 6 = 253 minutes 17 seconds = 4 hours 21 minutes 17 seconds.

Answer:

4 hours 21 minutes 17 seconds.

Step-by-step explanation:

Which formula gives the x-coordinates of the maximum values for y = cos(x)?k(pi) for any integer k
k(pi) for k= 0, +/-2, +/-4...
k(pi)/2 for any positive integer k
k(pi)/2 for k= k= 0, +/-2, +/-4...

Answers

Answer:

The answer is B) k(pi) for k= 0, +/-2, +/-4,...

Step-by-step explanation:

edg

Answer:

the correct answer is B i got it right on my test

Step-by-step explanation:

A survey found that 3 out of 100 people have red hair.On the basis of this survey, how many people in a group of 12,000 people are likely to have red hair?

A.4000

B.360

C.36

D.3

Answers

B is the answer because you cross multiple the two fractions.
(3)/(100) (x)/(12000)
3 *12,000=36,000
36,000/100=360

Answer:

THE ANSWER IS 360

please deal with it lol :)

good luck on the test

Accumulated depreciation of a particular plant asset refers to: half-yearly depreciation total depreciation. or neither?

Answers

Accumulated depreciation of a particular plant asset refers to neither the half-yearly depreciation nor total depreciation.

Accumulated depreciation is the total depreciation expense reported since the plant asset was bought. Its amount is used to determine the book value or carrying value of the plant asset. 

When the plant asset is fully depreciated, that is only the time when accumulated depreciation is equal to the total depreciation.

Write the vertex form equation for this parabola: Focus (3,-9), Directrix X=-3

Answers

Y=KX+M
-9=(-3/9)*-3+m
-9=1+M
M=-10

Y=(-3/9)-10 is the answer

A small acting club has 4 members. three of the members are to be chosen for a trip to see a broadway play. how many different 3 -member groups are possible?

Answers

I think the answer is 4 different possibility's.
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11Select the correct answer.The elimination method is ideal for solving this system of equations. By which number must you multiply the second equation to eliminate theyavariable, and what is the solution for this system?x + 3y - 422x-y-14OA. Multiply the second equation by-3. The solution is x = 12. y - 9.ов.Multiply the second equation by-2. The solution is x-12. y = 10.OC.Multiply the second equation by 2. The solution is x - 15, y = 9.ODMultiply the second equation by 3. The solution is x - 12. = 10.ResetNext