1,642 Answered Questions for the topic Math Help For College
05/13/16
A rocket is launched at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t) = -4.9t^2 + 280 t + 108......
A rocket is launched at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t) = -4.9t^2 + 280 t + 108.At what time does the rocket reach its maximum height?...
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05/13/16
The cost, C(x), of producing x Totally Cool Coolers is modeled by the function C(x) = 0.005 x^2 -0.25 x + 24...........
The cost, C(x), of producing x Totally Cool Coolers is modeled by the functionC(x) = 0.005 x^2 -0.25 x + 24How many coolers need to be produced and sold in order to minimize the cost? (Round to the...
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05/13/16
Pre calculus
I need help!
1)Graph the parametric curve.
x(t)=3t
y(t)+9t^2
t=1
2) graph the polar equation r=theta^2
3) graph the polar equation. r=5cos(theta)
4)graph. x(9)=(√t)...
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05/12/16
Word problem
You wish to build a rectangular pen facing north-south and east-west. there will be one north-south interior fence from the southern border to the northern border. the north-south fence costs $3...
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05/10/16
What is the logistic equation satisfied by the population, p?
The population of a certain planet is believed to be growing according to the logistic equation. The maximum population the planet can hold is 1010. In year zero the population is 50% of this...
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05/09/16
For what value of t is x(t)=40?
Solve the equation x′=3(100−x) with the initial condition x(0)=80.
For what value of t is x(t)=40?
(university level math)
05/09/16
find the probability that the mean number of students is between 20 and 30.
Suppose the number of students in a class for the Business Statistics program at a University has a mean of 23 with a standard deviation of 4.3. If 15 classes are selected randomly, find the...
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Math Help For College
05/08/16
Finding the price per share of two stocks
Norman and Suzanne own 35 shares of fast food restaurant stock and 63 shares of a toy store company. At the close of the markets on a particular day in 2004, their stock portfolio consisting of...
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Math Help For College
05/07/16
Find the speed
A car travles 450 mi at a certain speed. If the speed had been 5mph faster, the trip would have been made in 1 hr less time. Find the speed.
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Math Help For College
05/07/16
Two cards are drawn without replacement from an ordinary deck. Find the probability that the second is a diamond, given that the first is the 5 of diamonds.
Conditional Probability & Independent Events
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Math Help For College Math Word Problem
04/28/16
A rectangular painting has a diagonal measure of 13 inches and an area of 60square inches. Use area and Pythagorean Theorem formula to find the length and width
A rectangular painting has a diagonal measure of 13 inches and an area of 60 square inches. Use the formula for the area of a rectangle and the Pythagorean Theorem to find the length and width of...
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Integration question involving cosh^-1???
Evaluate the integral (1/sqrt(x^2 - 5))dx on limits of 3 to 4, using the formula: integral of (1/sqrt(x^2 - a^2))dx.
Recall that this formula was found by using the substitution x = a cosh t, and...
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04/27/16
How much does the temperature change by?
A mass of gas at pressure P and temperature T (degrees Kelvin) and volume V satisfies the equation T = KPV where K is a constant. The initial temperature is 250 degrees Kelvin, the inital volume is...
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04/21/16
how to answer using snell's law
Need to know how to solve and how you got an answer. A beam of light moves from an optical fiber (n=1.44) to air. If the beam of light entered at an angle of 12 degrees, what is the angle of...
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04/21/16
How to find using snell's law
Need to know how to solve and how you got an answer. A beam of light moves from air to an optical fiber (n=1.44). If the beam of light entered at a 23 degree angle, what is the angle of refraction...
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04/21/16
how to find side lengths of a parallelogram
A parallelogram has sides of lengths 5 and 9, and one angle is 31°.
What is the length of the smaller diagonal?
What is the length of the longer diagonal?
your answer should be...
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04/20/16
Probability calculations
Probability calculations – exactly one occurrence You are looking for a job. Eventually you get six interviews. In each case you are one of four final candidates for the respective job. Let us...
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Math Help For College
04/20/16
Madelyn Logan is and office dealer who earns a 17,000 base on salary. She also earns a 4% commission on sales. How much must she sell to earn a total of 59,000?
Need to know the answer for this question, because I clearly don't get it if I am asking this website to figure it out for me
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Math Help For College
04/20/16
6x - 2y = 17 Step 1 of 2 : Determine the missing coordinate in the ordered pair (-2, ?) so that it will satisfy the given equation.
what is the missing number
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Math Help For College
04/19/16
A theater can seat 648 people. The number of rows is 3 less than the number of seats in each row. How many rows of seats are there?
applications of quadratic equation
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04/17/16
What volume of blood passes along the artery in one second?
An artery has a circular cross section of radius 3 millimeters. The speed at which blood flows along the artery fluctuates as the heart beats. The speed after t seconds is 20+5sin(2πt) meters per...
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04/16/16
How quickly is the mass of the tree increasing?
A tree trunk is approximated by a circular cylinder of height 50 meters and diameter 3 meters. The tree is growing taller at a rate of 4 meters per year and the diameter is increasing at a rate of...
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04/16/16
How quickly was the population changing at the start of 1985?
The number of rabbits in a forest varies with time. During the period of 1980 to 1990 the number is given approximately by the formula 8000+5000sin(2πt/5) where t is the number of years after...
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04/15/16
What is the distance from town A to C?
Town b is 380 km due south of town A. Town C is 460 km due east of town B. What is the distance from town A to town C?
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Math Help For College
04/13/16
Joette has $16.95 in dimes and quarters. The number of quarters is three more than twice the number of dimes. How many of each coin does Joette have?
The number of quarters is three more than twice the number of dimes. How many of each coin does Joette have?
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