If a ball is thrown vertically upward with a velocity of 120 ft/s, then its height after t seconds is s=120t-16t^2 What is the velocity of the ball when it is 96 ft above the ground on its way up?
a laboratory designed a radio telescope with a diameter of 320 feet and a maximum depth of 42 feet. the graph depicts a cross section of this telescope. find the equation of this parabola.
a rock falls from a tower that is 288 feet high. as it is falling its height is given by the function h(t)=288-16t2. how many seconds will it take the rock to hit the ground (h=0).
The angle of elevation to the top of a building changes from 20 degrees to 40 degrees as an observer advances 75 feet toward the building. Find the height of the building to the nearest foot.
the function I(t)=-0.1t2+1.8t represents the yearly income or loss from a real estate investment where t is time in years. after what year does income begin to decline.
A certain bacteria population is known to doubles every 150 minutes. Suppose that there are initially 120 bacteria.
An airplane is flying in the direction 148 degrees with an airspeed of 860 km/h. Because of the wind, its groundspeed and direction are, respectively, 800 km/h and 140 degrees. Find the direction and speed of the wind.
f(-3)=6 and f(1)=-2
Tony and Sue are launching yard darts 20 ft from the front edge of a circular target of radius 18 in. on the ground. If Tony throws the dart directly at the target, and releases it 3 ft above the ground with an initial velocity of 30 ft/sec at 70 angle, will the dart hit the target?
Ask a new Math Question
Tips for asking Questions
- Provide any and all relevant background materials. Attach files if necessary to ensure your tutor has all necessary information to answer your question as completely as possible
- Set a compelling price: While our Tutors are eager to answer your questions, giving them a compelling price incentive speeds up the process by avoiding any unnecessary price negotiations
1. I’m having problems with my math. Can you help me? All I need is an example just to make sure I'm on track.
- Solve the following
- a) 3/(n+1)-1/(n+1)=14/(n^2-1)
- b) 1/(y-1 )+y/(1-y)
- d) (x-2)/(8x-24)*(5x-15)/(x^2 -4)
- e) z/(z-1)+1/2=3/z
- f) (x-3)/(x^2+2x-15)-(4-x)/(x^2-9x+20)
- 2. How do I set up this problem? An exam contains five "true or false" questions. How many of the 32 different ways of answering these questions contain 3 or more incorrect answers?