The number N of bacteria in a culture is given by the model N=175e^kt where t is the time in hours. If N=420 when t=8, what is the time required for a population to double in size

The number N of bacteria in a culture is given by the model N=175e^kt where t is the time in hours. If N=420 when t=8, what is the time required for a population to double in size

The speed of a carousel is 4.3 revolutions per minute. Johnny choses a red horse. If the typical ride is 5 minutes how far from his starting point is johnny when the ride is over?

sin a/2 if cosa = 7/9 (assume sin a/2 is positive)

An equilateral triangle is inscribed in the unit circle. find the exact perimeter of the equilateral triangle.

Need to know big B degrees, Big A and little a. Solve step by step to get answer

Evaluate sin(sin-1(sin60)) [60 degrees] and evaluate cos-1(cos(cos-10.5)) if the angle is in quadrant 1.

If 16x^2 - 24x + k = 0 has two roots (a double root) equal to 3/4, 4 = ?

a ship is offshore from a vertical cliff known to be 250 feet in height. if the angle of depression 15 degrees from the cliff to the ship.how far from shore is the ship?

y=2cos2x.what is the domain=? range=? amplitude=? period=?

8sinAcosAcos2Acos4A

y=1/2sin x domain=? range=? amplitude=? period=?

I really need helping understanding this, can someone please give me a step by step of this problem. thanks. Find cos(a+b) if sin(a)=-3/5 where a is in the fourth quadrant and tan(b)=12/5...

Given: the center of the ellipse is located at the origin and it passes through (1,3) and (2,2)

iTS A SPECIAL TRIANGLE QUESTION.

I am not understanding the question can someone help?

How would I model the formula to find the average and minimum/maximum?

Need to know ASAP!

from the top of a hill the angle of depression of two consecutive 1 km stones due west are found to be 30 and 45 degrees . find the height of the hill

a ship is on a bearing 47 degrees east of north. a) how far has the ship sailed if it is 185 km north of its original position b) how Far East of its original position is the ship?...

A survey team was to measure the distance across a river over which a bridge is to be built. They set up a survey post on their side of the river directly across from a large tree on the other side...

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