02/14/19

Find the volume generated by revolving the region bounded by y = x^2, y = 0, and x = 1 about the following...
a) the x-axisb) the line y = -3c) the line x = 3
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02/13/19

The logistic model represents the percentage of households that do not own a personal computer t years since 1983.

In 1998​, ___​% of households did not own a personal computer.​(Round to one decimal place as​ needed.)
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02/12/19

Find the derivative of (x^3)√[(x^2) - 8]
I know how to solve derivatives, but this one is just a bit daunting and I don't know where to start with it.Let f(x) = x3 √(x2 – 8), find f´(x).
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02/11/19

Completing the Square to get in into vertex form -x^2-6x-10
Please help me. I'm at the brink of a mental breakdown because no sites will solve my question without expecting money or not showing their work without a subscription-x^2-6x-10
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02/11/19

Optimization. Im really struggling here...
You are designing a rectangular poster to contain 50 square inches of printing with a 4 inch margin at the top and bottom and a 2 inch margin at each side. What overall dimensions will minimize the... more
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02/10/19

Tangent from an external point
Tangents PA & PB are drawn from a point P to the circle. Let X be a random point on the circle. XA',XB',XC' are perpendiculars drawn from X on to the sides AB, PB and PA. If XB' = 2,XC'= 18 ,... more
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02/08/19

Find the Volume V....
Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line.y = 2e−x, y = 2, x = 6;    about y = 4V= ?
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02/08/19

Prove that cos/1-sin - cos/1+sin = 2tan
I just don't get how to do these types of problems. I've been trying for so long and I have a whole worksheet that's going to actually kill me.
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02/07/19

How do I solve this problem using the Pythagorean theorem?

I need to find the b side of a triangle that has a hypotenuse of 2,5 and an a side of 10 m.I tried to do this:102 + b2 = 2,52100 + b2 = 6,25b2 = 6,25 - 100b2 = -93,75I don't know how to proceed... more
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02/07/19

Find dy/dx if y=tan^-1(a+x/1-ax)
Tried solving this using the formula for d(tan^-1)/dx=1/(1+x^2), but was unsuccessful. I want to know how to solve this.
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02/06/19

This is a word problem

The sum of three numbers is 95. The third number is 3times the first. The second number is 10 more than the first. What are the numbers?
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02/06/19

auren describes a triangle in the following way:           The triangle's three sides measure 7 centimeters, 11 centimeters, and 13 centimeters. ​How many unique triangles fit this description
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02/06/19

Let C be between D and E. Use the Segment Addition Postulate to solve for n. DC = 5n – 30 CE = 6n – 25 DE = 44

Let C be between D and E. Use the Segment Addition Postulate to solve for n.DC = 5n – 30CE = 6n – 25DE = 44 
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02/05/19

problem 1-section2.1
 Let f(x)=x^2-2x. Calculate the difference quotient (f(2+h)-f(2))/(h)h=.1h=.01h=-0.1h=-.1slope of the tangent line to the graph of f(x) at x=2 is m=limhto0 (f(2+h)-f(2))/(h)=the equation of the... more
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02/05/19

Need help with this math problem.
MME rented and filled 2 vans and 2 buses with 60 students. MMW rented and filled 4 vans and 1 bus with 54 students. Every van had the same number of students in it as did the buses.Number of... more
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02/04/19

Circle question-Precalculus
A small radio transmitter broadcasts in a 44 mile radius. If you drive along a straight line from a city 49 miles north of the transmitter to a second city 61 miles east of the transmitter, during... more
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02/01/19

Turn the question into an inequality

Four more than a number is more than 13
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02/01/19

Math Problem about rotating R across the Y axis
Here's the question: https://imgur.com/a/dzrSAVOI cant solve this question. The setup pi * integral from 0-21 of (7x)^2 - (x)^2 doesn't work. How do I solve it?
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02/01/19

Point M is loaed at (-2, 7). Point N is located at (6, y). The distance between M and N on the coordinate plane is 10 units. Find a possible y-value of point N.
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01/31/19

pre cal homework please help im so confused

to find the heigth of a hill, two angles of elevation are measured from ground level. The angle of elevation from point b to the top is 63 degrees. After the suveyor moves 140 ft directly away from... more
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01/30/19

Percentage math?
Sidney spent 30% of her monthly salary on a new laptop last month. Then she spent 50% of her salary to pay her monthly bills. She put the remaining 1,200$ into her savings account. What was her... more
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01/28/19

Find and simplify f(a + h) − f(a) h , (h ≠ 0) for the function. f(x) = 2x2 − 4x + 3
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01/25/19

Find the volume of the solid formed by rotating the region enclosed by x=0, x=1, y=0, and y=5+x^5 about the y-axis
Find the volume of the solid formed by rotating the region enclosed by x=0, x=1, y=0, y=5+x^5 about the y-axis.
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01/23/19

rewrite function in vertex form
Rewrite function in vertex form f(x)=x^2+6x+4
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01/22/19

d2y/dx2 y = xsinx -3cosx
how to solve this question
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