01/13/21

I am confused on how to go about the following calculus questions
Solve:1.) √ ln x = ln √ x2.) Show that d/dx (1/2 tan −1 x + 1/4 ln (x + 1)2 /x 2 + 1 ) = 1 / (1 + x) (1 + x 2)3.) At what point on the curve y = [ln (x + 4)]2 is the tangent horizontal?
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01/13/21

what is the angular acceleration of the pulley?
A pulley with a radius of 38 cm has a moment of inertia of 35.5 kg*m2. If the net torque acting on the pulley is 7 N*m, what is the angular acceleration of the pulley?
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01/12/21

A construction worker pulls a five-meter plank up the side of a building under construction by means of a rope tied to one end of the plank.

Assume the opposite end of the plank follows a path perpendicular to the wall of the building and the worker pulls the rope at a rate of 0.30 meter per second. How fast is the end of the plank... more
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01/12/21

A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.
(b) Consider the triangle formed by the side of the house, ladder, and the ground. Find the rate at which the area of the triangle is changing when the base of the ladder is 20 feet from the... more
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01/12/21

To solve the whole question as soon as possible.
(a) Let n > 0 be an integer and Ln be the language of all linear equations a1X1 + a2X2 + · · · + anXn + an+1 = 0 in n unknowns X1, X2, . . . , Xn and over integer coefficients a1, a2, . . . ,... more
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01/12/21

Solving a word problem using a quadratic equation with irration
A ball is thrown from an initial height of 2 meters with an initial upward velocity of 13/ms  The ball's height h (in meters) after t seconds is given by the following. =h+2−13t5t2 Find all values... more
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01/11/21

AP Physics Question about gravitational field
Two planets P1 and P2 orbit around a star S in circular orbits with speeds v1 = 45.8 km/s, and v2 = 56.8 km/s respectively.(a) If the period of the first planet P1 is 740 years what is the mass, in... more
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01/11/21

You are driving at 60 mph you slow down to a stop which takes 200 meters..
.. Then you speed up to 30 mph which took 70 seconds how much time did this trip take? how far did you drive total? *convert units to m/s
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01/09/21

Related Rates (Derivatives)
How to show that if the volume of a balloon is decreasing at a rate proportional to its surface area, the radius of the balloon is shrinking at a constant rate.
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01/09/21

Find an equation of a plane containing the three points (-2,-5,0), (0,0,3), (0,1,5) in which the coefficient of x is 7

Find an equation of a plane containing the three points(-2,-5,0), (0,0,3), (0,1,5)in which the coefficient of x is 7____________ = 0
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01/08/21

Finding stationary points

Need answers to this question. It is one question but in two parts.for F(x,y) = 6x . y - 24(x + y)Subject to x^2 + y^2 = 16 Find: a) a global stationary point and its value Maximum point: (x,y)max... more
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01/08/21

Algebra 2 probability
A bag contains 1 green, 4 red, and 5 yellow balls. Two balls are selected at random. Find P (1 red and 1 green).
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01/08/21

Calculus Integration
Find the position function  if , , and .
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01/08/21

Make a step function based on a real life example & graph it

Your job is to come up with a real life application for a step function. Please write it out completely, and then assign an equation and make a graph for it. You can graph on paper or attach a... more
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01/07/21

A bow has a spring constant of 388 N/m. It is pulled back 0.860 m, and used to fire a 0.105 kg arrow. When it is 45.4 m above the ground, how much KE does it have?
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01/07/21

The average monthly temperatures for the middle of each month for New Orleans are plotted. Showing all of your work, write an equation of the average daily temperature graph.
The points on the graph are (15, 12), (105, 20), (197, 28). I used the maximum and minimum points to find the amplitude and vertical shift. I am struggling to find the c value of y=asin(bx-c)+d.... more
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01/07/21

How to write a function R(x) to be graphed
The assignment question I am stuck with is how do I write a function R(x) that models the combined rate of the two pipes in relation to the time it takes for pipe B to do it by itself? After I... more
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01/07/21

I need some help
what is the slope of the tangent to the curve y3x + x2x2 = 6 at (2, 1) is:A. 5/2B. 3/2C -5/14D. -3/14
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01/07/21

Find the time required for an investment of 5000 dollars to grow to 8800 dollars at an interest rate of 7.5 percent per year, compounded quarterly.
Find the time required for an investment of 5000 dollars to grow to 8800 dollars at an interest rate of 7.5 percent per year, compounded quarterly.got 7.6 which was wrong, put 8 also wrong, someone... more
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01/07/21

Find h'(1) for the function h(x)=f(x)f(x) where f is a function such that f(1)=4 and f'(1)=1
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01/07/21

Physics question
What is the minimum radius at which an airplane flying at 300. m/s can make a U-turn if its centripetal acceleration is NOT to exceed 4 g’s (1g = 9.8m/s2)?
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01/07/21

HELP! A satellite is orbiting the earth at an altitude where the acceleration due to gravity is 8.70 m/s2. What is its speed? 7.45x103 m/s 2.65x103 m/s 7.91x103 m/s 7.68x103 m/s
A satellite is orbiting the earth at an altitude where the acceleration due to gravity is 8.70 m/s2. What is its speed?7.45x103 m/s2.65x103 m/s7.91x103 m/s7.68x103 m/s
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01/06/21

2x^2-5x-4=0 Evaluate the discriminant. Then determine how many solutions and what type of solution(s) the equation has
I already have the discriminate as 57 and number of solutions as two I just need to know the type of solution
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01/05/21

Degree 3; zeros: -5, 5 - 5i
Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f.
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01/05/21

Question of Physics
A block of mass of 2m comes with initial speed v0 and collides with a system of two particles connected by a spring of spring constant k elastically on a frictionless horizontal table, each having... more
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