09/22/20

A population grows from 11,000 to 19,000 in three years.
A. Assuming the growth is exponential, find the annual growth rate.B.  Assuming the growth is exponential, find the continuous growth rate.
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09/17/20

Find the function

The population density x miles from the center of a city is given by a function is given by Q(x) = Ae^(-kx) Find this function if it is known that the population density at the center of the city... more
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09/17/20

A plane is heading due east and is climbing at a rate of 80 km/h. The plane's airspeed is 490 km/h and the wind is blowing 110 km/h to the northwest. What is the ground speed of the airplane?
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09/16/20

A line includes the points (7,6) and (1/6) what is it equation in slope-intercept form

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09/16/20

Find the average rate of change of ​f(x) = -3x^2 + 6 over each of the following intervals:
Find the average rate of change of ​f(x) = -3x^2 + 6 over each of the following intervals:​(a) From 1 to 3​(b) From −2 to 0​(c) From 3 to 6
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09/16/20

A car is traveling on a highway at 67 mph (or 30 m/s). How far does the car travel from the time the brakes are applied until the car stops, if the car brakes with a deceleration of the following;
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08/21/20

Two trains leave a station

A train leaves the station at 3:00pm and travels east at 65mph. Another train leaves the station at 4:00pm and travels in the same direction at 75mph. At what time will the second train overtake... more
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08/20/20

Statistics task
Suppose you have a box with 3 blue marbles, 2 red marbles, and 4 yellow marbles. You are going to pull one marble, record it’s color, remove it from the box and draw another marble. What is the... more
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08/20/20

Let f be the function given by f(x)=2^x^2.

Selected values of f are given in the table below. If the values in the table are used to approximate f′(0.5), what is the difference between the approximation and the actual value of f′(0.5)?x ... more
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08/20/20

College Algebra
Mmaximize the function f(x y)=2x+3y in the region determined by the following constraints. 3x+2y<18. 3x+4y>12. X>0. Y>0
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08/20/20

simplify. x((x+5)^-1/2) - sqrt(x+5)
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08/20/20

Help me with math please

What amount P should be invested at 8% per annum, compounded annually, so that $2000 will be available after 7 years?
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08/20/20

Four more than three times a number is equal to 7 less than 6 times the same number.
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08/19/20

Verizon has a $40 set up fee and cost $60 per month. AT&T has no set up fee and costs $80 per month. Write an equation to represent, m, the number months will both providers cost the same
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08/19/20

solve for x. (6cos(x) +2sin(x))^2 + 32sin^2(x) = 42
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08/19/20

Someone Please help me. Please
A super large tank was initially filled with brine solution of 20 liters.  At some point, fresh water starts to flow in at a rate of 8 liters per minute, and the well mixed solution flows out at... more
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08/19/20

I need help understanding this math problem

A cubic function has roots of -3, 1/2, 2, and a y-intercept of 6. Determine the function. Find the value of P(2).
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08/19/20

Given that csc(θ)=5/2 and π/2 <θ< π, find cot(θ).
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08/19/20

Can you please help me with this question?
There are 6 blue and 9 red marbles in a bag. Three marbles are picked at random. What is the probability (%) of picking 2 blue and 1 red marble?
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08/19/20

Calculus in physics (2)
If the current position of the object at time t is s(t), then the position at time h later is s(t+h). The average velocity (speed) during that additional time h is (s(t+h)−s(t))h . If we want to... more
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08/19/20

Calculus in economics

Problem Set question: The cost, in dollars, of producing x units of a certain item is given byC(x)= 5x−4 sqrt(x-4). Find the production level that minimizes the average cost per unit.  The number... more
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08/18/20

Difficult parabola question(s)
Premise: The reflector if a satellite dish is in the shape of a parabola with a diameter of 4 feet and a depth of 2 feet. To get the maximum reception we need to replace the antenna at the focus.... more
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06/24/20

katrina drinks 0.5 gallons of water per day which expression shows how to find the number of cups of water she drinks in a week
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05/22/20

derivatives calculus
Find the First derivative of the following functions from the First Principles:(4x+3)1/2
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05/21/20

Graph a function
Graph of a function with the given listed belowcontinuous for all real numbers xfirst derivativef" (x)>0 if |x| <2 and f'(x) <0 if |x| >2f" (2)=0lim x approaches infinity f(x)=1f is an... more
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