10/22/13

lines a(1) and a(2 in two-dimensional space intersect at a point, forming an acute angle A
lines a(1) and a(2 in two-dimensional space intersect at a point, forming an acute angle A. the slope of a(1) is square root of 5 , and cos A= 2/9. What is the slope of a(2)? There are two answers,... more
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10/21/13

What is the tension?
A 108 N lamp is hung up with two ropes that each make 20º angles with the horizontal. What's the tension in the ropes? What's the tension if the angle is 60º?
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10/21/13

Find the speed of the airplane in still air.
An airplane flew for 5 hours against a 20ph headwind. The return trip with the wind took 4 hours. Find the speed of the Plane in still air and explain how you arrived at your conclusion.
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10/21/13

Find all integers for "a" in which x^2+ax-32 can be factored
find all integers for "a" in which x2+ax-32 can be factored. Explain how you arrived at your conclusion.
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10/21/13

How fast would a 15 kg box accelerate?
How fast would a 15 kg box accelerate down a 25º snowy slope if the coefficient of kinetic friction were 0.15?
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10/21/13

What is minimum amount?
A sled of mass 40 kg is pulled along flat, snow-covered ground. The static friction coefficient is 0.28, and the kinetic friction coefficient is 0.0800. What is minimum amount of force needed to... more
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10/21/13

dilute 55 liters of 20% salt solution to a 12% salt solution. How many liters of distilled water does the student need to add to the 20% salt solution to obtain
How many liters of distilled water does the sudent need to add to the20% salt solution to obtain the 12% salt solution? A student wants to dilute.
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10/21/13

Composite Function: For the given functions f and g, find the requested composite function value.
 For the given functions f and g, find the requested composite function value.f(x) = 3x + 9, g(x) = -2/x; Find (g  f)(3).   Please step by step instructions
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10/21/13

Given that 2x-5=3(2x-2)-15, WHAT IS THE EVALUATION OF 2X+1?
what is the evaluation?
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10/20/13

solve the equation log2 x + logx 2 =2.5
solve equation log2x + logx2=2.5
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10/19/13

The real number system
2x3-x2+2x-1=0    help me solve this 
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10/19/13

The real number system
please how do I solve the equation in a real number system    4x^3-19x^2+19x+6=0
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10/17/13

What is the force due to gravity?
A 10 kg mass on a horizontal friction-free table is accelerated by a string attached to 12 kg mass hanging vertically from a pulley. a) What's the force due to gravity on the 12 kg hanging mass? b)... more
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10/17/13

Two watches are together at 12 O'clock. If one gains 75 seconds each hour, and the other loses 45 seconds each hour, when will they be together again at 12?
 Two watches are together at 12 o'clock.  If one gains 75 seconds each hour , and the other loses 45 seconds each hour, when will they be together again at 12?
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10/17/13

68% of cars on a toll-road have EZ-pass. 5 cars are approaching the toll-gates. What is the probability that:
a. None have E-Z pass? b. All have E-Z pass? c. All but 2 have E-Z pass? d. At least 2 have E-Z pass?
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10/17/13

probability question
Suppose that S = {1,2,3,4}, A = {2,3}, B = {3,4}, and C = {1,2}Furthermore, assume that P(1) = 0.1, P(A) = 0.7, and P(B) = 0.5Please use no more than 3 significant figures in decimal form. Do not... more
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10/17/13

Fractioon word problem
Marilyn's recipe for lemondade calls for 3/4 cup of sugar for ever 1/2 cup of lemon juice.  Which of the following equations represents the relationship of cups of lemon juice to cups of sugar in... more
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10/16/13

A 55 kg box slides across the floor by a force of 25N.
a.) How large a friction force impedes the motion of the box? b.) How large is the normal force?
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10/16/13

REALLY NEED HELP WITH MATH (GRADE9)
The product of the ages of a set of triplets is 12 times the sum of their ages. Determine how old the triplets are.        (we are currently learning about exponents and powers, if that helps.) 
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10/16/13

A pair of dice are rolled 8 times. Find the probability that:
a. A sum of 7 is rolled exactly 2 times. b. A sum of 7 is rolled at least 2 times. c. A sum of 7 is rolled at most 2 times. d. A sum of 7 or 11 is rolled exactly 5 times. e. A sum of 7 or 11 is... more
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10/16/13

A 450 kg fully loaded elevator is moving downward.
The tension in the cable is 3500 N. What is the elevator's acceleration?
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10/16/13

A 100N object is on an incline at 370. The coefficients of static and kinetic friction are both 0.30.
a.) What is the smallest force parallel to the incline needed to keep the object from sliding down? b.) What parallel force is required to keep  the object moving up the incline at a constant... more
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10/16/13

Jeff is 2 years younger than Carrie. 12 years ago, Carrie was twice as old as Jeff. How old is Jeff now?
Jeff is 2 years younger than Carrie.  12 years agao, Carrie was twice as old as Jeff. How old is Jeff now?
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10/16/13

Given: f(x) = 1/2 f(x-1) - 3 and f(1) = -5 , find f(-2)
I'm a tutor and I have never seen a problem like this one in honors algebra 2.  Can anyone help?
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10/16/13

what do I do?
I have a large word problem using 2 points. I got my slope, but now i have to find my value of B for y=Mx+B. the equation that i tried is not making sense for the answer. can you help?
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