11/02/15

findind the rate of change of distance
A helicopter is taking at an angle of 60 degree,flying at 20 m/sec,in a straight line away from an observer at ground level 100m away from take off point.Find the rate of change of the distance... more
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11/01/15

Anyone understand Calculus 3 (ch. 13) Arc Length in Space?
I am taking an online math class and there was a question I got wrong but I believe I was correct on it. Open the link to see the question. Its on Calculus... more
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10/29/15

statistics
A box of 11 parts contains 55 that are defective. A worker picks parts one at a time and attempts to install them. Find the probability of each outcome in? (a) through? (d).?(a) The first two... more
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10/29/15

statistics
The weekly salary paid to employees of a small company that supplies? part-time laborers averages ?$850 with a standard deviation of ?$550.?(a) If the weekly salaries are normally? distributed,... more
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10/29/15

can someone please help me solve this problem and do the graph.
A farmer has 100 acres of land on which she plans to grow wheat and corn. Each acre of wheat requires 4 hours of labor and $20 of capital, and each acre of corn requires 16 hours of labor and $40... more
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10/29/15

Explain the transformations that have taken place
Explain the transformations that have taken place for the function g(x)=cosx to become the function h(x)=-2cos(pi*x + pi/4).   -reflected in the x axis -stretched vertically by a factor of 2 -... more
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10/28/15

Simplify the problem
3x^2+9x+6/6x^2-6x-12
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10/28/15

Simplify the problem
Xy+y^2/xy-y^2
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10/28/15

Find both the radian and degree measure of the angle between the point on the coordinate plane and x-axis without the use of a calculator.
Find both the radian and degree measure of the angle between the point on the coordinate plane and x-axis without the use of a calculator. Show and explain your work.
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10/28/15

Rewrite this function with y on the left, to enter into your calculator: y + 4 = |2x| – 3. Will you select = (2 ENTERs, shaded above) or = (3 ENTERs, shaded bel
A.  ≤ (3 ENTERs, shaded below) B.  ≥ (2 ENTERs, shaded above)
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10/28/15

Using Descartes' Rule and the Fundamental Theorem of Algebra to predict complex roots of polynomials
I'm taking a pre-calculus course online, and teaching myself is turning out to be very difficult. Most recently, I have to do a written assignment as follows:         How could you use Descartes'... more
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10/27/15

Finite math
Find pr[z>or = to 1.94]
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10/27/15

8th grade math story problems
1-Mrs. fairbourn went to kneaders to buy some bread. The apple bread cost $5 more than the pumpkin spice. Orange rolls were $8 less than the apple bread. Freshly baked whole wheat was twice as much... more
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10/27/15

A student is taking a tru/false exam with 15 questions. If he guesses on each question, what is the probability he will get at least 13 correct
A student is taking a tru/false exam with 15 questions. If he guesses on each question, what is the probability he will get at least 13 correct?
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10/27/15

A jeweler wants to make 1600 grams of 25% silver compound by mixing 20% and 40% silver compounds together. How many grams of each kind will she need?
Im not sure how to solve this one
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10/26/15

Need help with math sequence
so I have a mathematical sequence sequence, and this is what I'm told: the sequence has an even number of digits/places. The sum of the odd places (1st, 3rd, 5th, etc) equals 100, the sum of the... more
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10/26/15

Using Descartes' Rule and the Fundamental Theorem of Algebra to predict complex roots of polynomials
I'm taking a pre-calculus course online, and teaching myself is turning out to be very difficult. Most recently, I have to do a written assignment as follows:         How could you use Descartes'... more
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10/25/15

complete the ordered pairs of x=7-4 and than graph
 Complete the ordered pairs so that each is a solution of the given linear equation, then graph the equation.
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10/24/15

y=Asin(k+c)+h
Graph sine and cosine
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10/23/15

STAT Question
What are the chances that a person who is murdered actually knew the murderer? The answer to this question explains why a lot of police detective work begins with relatives and friends of the... more
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10/22/15

A multiple choice test has 15 questions with 1 correct answer and 3 incorrect answers for each.
How many ways can the test be answered if   a) all questions are answered b) exactly two questions are left blank? c) exactly three questions are answered incorrectly? d) exactly 10 questions... more
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10/22/15

Math Word Problem Need Help?
Suresh started with the number 350. He did something on his calculator and now the calculator shows 35. In his starting number, the 3 had a value of 300. In his ending number, the 3 had a value of... more
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10/22/15

Correction to f(x) and Reposted.....Derivative of the inverse of f(x) = a polynomial
Find the derivative of f-1(x) at x=6 if f(x) is defined by f(x) = x3 - x. I found the formula g'(x) = 1 / f'(g(x)), where g(x) = f-1(x).   Please explain in detail, because my teacher for AP... more
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10/20/15

Solving using interval notation
     x         +           3x        ≥     2  |x2 - 4|               x + 2
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10/20/15

Find the given term of each arithmetic sequence
121,110,99,88,...; 10th term
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