11/12/17

Determine if a set is a subspace.
Determine whether the given set is a subspace of P3. Explain why.  A = {p(t) = at^3+bt} Where a and b are both elements of the Reals. 
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11/12/17

Half-life problem
A radioactive substance used in nuclear weapons decays at the rate of 3.6% per year. Calculate the half-life of the radioactive substance. (Round to two decimal places as needed)
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11/12/17

A 5kg wooden box is oulled along the floor at a constant speed, with a force of 70N at an angle of 25° to the horizontal.
a) draw free body diagram of all forces acting on the box b) calcuate the magnitude of the support force from the floor and the friction force.
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11/12/17

two Massive black holes collided and in the process released the equivalent energy of 3 solar masses. How much energy was released?
Mass of the sun = 1.99x10^30 kg.  Energy released by 1 megaton bomb is about 4x10 ^15 joules. 
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11/12/17

When using elimination, how do you know what type of elimination to use? For example, multiplying, adding, or subtracting.
Using Elimination in math
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11/12/17

A rock thrown horizontally at a large bell 30.0m away is heard to hit the bell after 2.50 seconds. If the speed is 300.0m/s, what is the speed of the rock?
Please show me how to solve using vav=d/t.
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11/12/17

Who is julius Caesar
I want to know who Julius Caesar is,Do you know...will you help me
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11/12/17

A car travelling at 90.0km/h is 100.0m behind a truck travelling at 50.0km/h. How many seconds will it take the car to reach the truck?
Please show me how to solve using vav = d/t.
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11/12/17

A bullet is fired upward reaches maximum height of 2500m. find out how long it would have taken to reach the height of 2500m
 This is a numerical of physics which i cant solve so please help mee
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11/12/17

An ocean wave has a wavelength of 4 meters and a frequency of 3 hertz. What is the speed of the wave?
I need help to find the speed of the wave. In class we are doing a unit on Waves and I need additional help solving the word problems.
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11/12/17

true/ false calculus questions
If f is continuous on [0 , 1] , then it is also differentiable on [0 , 1] .  i think this is true, but. is there a particular theorem to prove this?   If f is differentiable on [0 , 1] , then... more
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11/11/17

A train X departed from meerut at 4:00PM and arrives 5:00PM at Ghaziabad.Another train Y departed from Ghaziabad at 4:00PM and arrives Meerut at 5:30PM.
This is a reasoning question..A train X departed from meerut at 4:00 PM and arrives 5:00 PM at Ghaziabad . Another train Y departed from Ghaziabad at 4:00 PM and arrives Meerut at 5:30 PM. So what... more
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11/11/17

Write the equation of the circle. Express the final equation in the form x2 + y2 + Dx + Ey + F = 0. Center at (−2, 9) and r = 8
how do you put it in that form and solve ?
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11/11/17

Find the equation of the circle that passes through the origin and has its center at (−3, 4)
How do find that
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11/11/17

Find the degree measure of the angle whose supplement measures twice itself
help please I need help so much 
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11/11/17

The perimeter of a rectangular floor is 40 feet. Find the dimensions of the floor if the length is three times the width.
I need help with this problem I don't even know where to start.
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11/11/17

physics question
the 2 kg block in the figure slides down a frictionless curved ramp, starting from rest at a height of h=2.0 m the block the slides d= 8.0 m on a rough horizontal surface before coming to rest.... more
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11/11/17

A stationary shell explodes into 3 pieces
A stationary shell explodes into 3 pieces. 3kg piece travels north. two other fragments travel opposite directions of south west 25 degrees and south east 25 degrees. What is the speed of each of... more
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11/11/17

what happened to the one ? How did 9/5 change?
y+1=-3/5(x-3)   y+1=-3/5x+9/5   y=-3/5x+4/5
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11/11/17

Bass Straits separates Tasmania from Victoria
help me with the question 
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11/11/17

Marisa is nine years older than her sister, and the sum of their ages is 32
what is an equation made from this problem?
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11/11/17

Pre-Calc Question
 The position of an object at time t is given by s(t) = -9 - 5t. Find the instantaneous velocity at t = 4 by finding the derivative
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11/11/17

Need help on a vector math word problem.
A hot air balloon is flying at a constant speed of 20 mi/h at a bearing of N 36 degrees E. There is a 10 mi/h cross wind blowing due east. What is the balloon's actual speed and direction? Round... more
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11/11/17

On a 24 question math test, Nuno got 6 questions wrong. Nuno's score decreased by 30 points. What are the number that are in this equation?
This is about multiplication of rational numbers, I woukd like it to be an equation. 
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11/11/17

an explosion ocurs at a distance of 6.00km from a person. how long after the explosion does the person hear it. assuming temperature is 14c
 an explosion occurs at a distance of 6.00km from a person. how long after the explosion does the person hear it. assuming temp is 14c
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