06/26/18

Use logarithmic differentiation to find y’ : (question in description)
y=(5√x4)cosx ÷ 3(2x+6) simplify answer 
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06/24/18

Find the point where the common chord of the circles x^2+y^2=25 and x^2+y^2-12x-6y+25=0 crosses their line of centers.
Please explain to me how to get the answer in this problem .
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06/21/18

Find y-values.
Graph the equation. y=-3|x|. Let x=-3,-2,-1,0,1,2 and 3. Find the following y-values.
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06/04/18

A triangle has the following vertices: (-1, 3), (2, 4), (0, -2) It undergoes a dilation. The vertices of the image are (-4, 12), (8, 16), (0, -8). What wa
i need help
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06/03/18

Finding the vertices of a square
A square has centre (2/1) and one vertex is at (5/6) Then there are three points given: P(-3/4) Q(-1,-4) R(5/-4) Q: Which of these points are vertices of the square? The other vertices are Q... more
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06/01/18

If the log of 256 is 2.408, and the log of 1,384 is 3.141, find the log of 1,384/256.
I originally thought it was 1.304 but it is not that. 
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05/30/18

A box without a top is to be made to have a volume of 100 units³ . The length of the box must be four times its width.
Find the demensions of the box that minimize the area.  
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05/10/18

Use the definition of the derivative ((f(x+h)-f(x))/h) to compute dy/dx for y=5/(x-1).
use f(x+h)-f(x))/h, so simplify ((5/x+h-1)-(5/x-1))/h. Step by step calculations please
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05/03/18

The measure of the angles of DEF are in the ratio 2:4:4. What are the measures of the angles
I for get how to do it and I really don't want to fail this quiz tomorrow please help me and I will thank you if you can . 
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05/02/18

2cos2x(sin2x) + sin2x = 0?
I need help solving this problem, Solve the following trigonometric equation on the interval [ 0, 2pi ) : 2cos2x(sin2x) + sin2x = 0?
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04/30/18

Determine the distance from the fire to B.
Lookout station B is located 5 mi due east of station A.  The bearing of a fire from A is S 9°20ʹW and the bearingfrom B is S32°40ʹW. Determine the distance from the fire to B (to the nearest tenth... more
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04/28/18

find all times t>= to 0 in exact form (terms of fractions of pie) using the following formula
i) h=13+4sin33t-6sin23t-6sin3t  h is in cm find all times when t>= to 0 when the height is = to 9cm   ii) What is the first time the height is 9cm? give answer exactly and to 3 decimal places
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04/20/18

A(h,k) lies on the line y+3x=-10. B lies on the line x+y=4. If the origin is the midpoint of AB, find the values of h and k.
Just a coordinate geometry question that has been evading me for a while. I've tried my best but come up short. Any help will be appreciated
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04/16/18

https://ibb.co/bsszbn (Image) The two quads are similar but how to find x and y using the scale ratio and proportions multiplying?
https://ibb.co/bsszbn   image here
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04/15/18

The base of a solid S is the region enclosed by the graph of y=√ln(x-1), the line x=2e, and the x axis. If the cross sections of S perpendicular to the x-axis
The base of a solid S is the region enclosed by the graph of y=√ln(x-1), the line x=2e, and the x-axis. If the cross sections of S perpendicular to the x-axis are squares, then the volume of S... more
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04/14/18

Volume of a Solid Calc AB
If the region enclosed by the y-axis, the line y=2, and the curve y=3√x (cubed rt of x), is revolved about the y-axis, the volume of the solid generated is? Can you solve without a calculator... more
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04/14/18

Full question in details.
An isosceles trapezoid ABCD has bases AD = 17 cm, BC = 5cm, and leg AB = 10cm. A line is drawn through vertex B so that it bisects diagonal AC and intersects AD at point M. Find the area of... more
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04/13/18

Solve (sinx)(tanx) = 3sinx for 0 < x < 2pi. Round your answers to the nearest hundredth of a radian.
a 1.25, 4.39 b 0, 1.25, 3.14, 4.39 c 0, 3.14 d 0, 1.89, 3.14, 5.03
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04/01/18

How do I solve this calculus problem?
Peter can't remember the formula for the area of a circle. He decides to approximate the area of a circle by circumscribing a regular  18 -gon around the circle. If his approximation of the area is... more
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03/30/18

base of a solid in the region bounded by parabola x^2+y=4 and x+y=2. Cross sections of the solid perpendicular to the x-axis are semicircles. what is the volume
The base of a solid in the region bounded by the parabola x2 + y = 4 and the line x + y = 2. Cross sections of the solid perpendicular to the x-axis are semicircles. What is the volume, in cubic... more
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03/28/18

PreCalculus Questions
An airplane has an airspeed of 530 kilometers per hour bearing N30°E. The wind velocity is 20 kilometers per hour in the direction N40°W. By finding the resultant vector representing the path of... more
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03/25/18

Volume and minimum cost
A rectangular box is to have a square base and a volume of 40 ft3. If the material for the base costs $0.37 per square foot, the material for the sides costs $0.05 per square foot, and the material... more
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03/25/18

I’m not sure how to solve this cirlce question
Let the center of a circle that passes through the given points below be represented by (h,k). Use the distance formula to find the 3 radii in terms of h and k. Set these radii equal to create a... more
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03/24/18

Two people start from the same point. One walks east at 9 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing aft
Two people start from the same point. One walks east at 9 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes? (Round your answer to... more
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03/22/18

Determine the unknown angles:
http://d2vlcm61l7u1fs.cloudfront.net/media%2F12d%2F12d54f7d-5828-4549-a92f-cb0a245c8bdb%2FphpHF4iAz.png Given that the indicated lines in this photo are parallel, determine the unknown angles... more
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