10/13/17

Explain the significance of the Earth being farther away from the sun during Northern Hemisphere summer
regarding environmental science 
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10/13/17

Needs Rate of scooter and bike
A motor scooter travels 1818 mi in the same time that a bicycle covers 88 mi. If the rate of the scooter is 55 mph more than twice the rate of the bicycle, find both rates.
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10/13/17

One positive number is 4 times another number. The difference between the two numbers is 141. What are the numbers.
One positive number is 4 times another number. The difference between the two numbers is 141. What are the numbers.
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10/13/17

Could you guys help me with this question? I'm confused on what to do. If you could show your work, that would help me with the process.
 Factor y=x^2-100 and then use the zero-product property to find the roots of the quadratic equation.
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10/13/17

confusion in the actual length to be counted for this question..
A train travelling at a speed of 75 mph enters a tunnel 31/2 miles long. The train is 1/4 mile long. How long does it take for the train to pass through the tunnel from the moment the front enters... more
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10/13/17

Please help me with this algebra word problem!
Hannah wants to buy a $570 camera. She can save $50 each week from her paycheck. However, beforeHannah can buy the camera, she must give her brother $80 that she owes him. For how many weeks... more
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10/12/17

Solve for angular and linear speed
A neighborhood carnival has a Ferris wheel with a diameter of 60 feet. You measure the time it takes for one revolution to be 70 seconds. What is the angular speed in radians per second? What is... more
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10/12/17

After 2.0 s, Isabella was riding her bicycle at 3.0 m/s on a straight path. After 5.0 s, she was moving at 5.4 m/s. What was her acceleration
What is the answer for the question I am giving you or the problem 
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10/12/17

How far from the fulcrum should a 60 kg mass be placed in order to produce a torque of 90 mN ? (in meters)
Need help solving problem 
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10/12/17

my question is below...
How do I express 10^5 as a power of 3? Also, please explain and/or show work, I want to able to do this by myself next time! :)
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10/12/17

what is the numerator and denomitor for the # pie(is there one?)
 is there a numerator and denomomiter for # pie
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10/12/17

What is the mass of carbon contained in 37.1 g of caffeine?
Caffeine, a stimulant in coffee and some cola drinks, is 49.47% carbon, 5.19% H, 28.8% N, and 16.48% O. What is the mass of carbon contained in 37.1 g of caffeine?
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10/12/17

Write an equation for a line parallel to y=-3x+1 and passing through the point (3,-5)
Write an equation for a line parallel to y=-3x+1 and passing through the point (3,-5)
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10/12/17

How much mass can be placed 0.4 meters from the fulcrum in order to produce a torque of 200 mN?
Need help with formula for this type of problem
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10/12/17

Find the coordinates of another point on the graph of the function f if the point (2a, 2c) is on the graph of f and the function f is even. Explain why.
List each step by step and explain why each step was take. 
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10/12/17

Which of the following situations will increase the torque being produced on the left side of the balance beam shown here?
a. If the mass (m) on the balance beam is moved farther from the fulcrum. b. If the amount of mass (m) on the balance beam is increased. c. If the mass on the opposite side of mass (m) (the right... more
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10/11/17

I need help on this physics lab question. I found everything else to be easy, except this problem. I appreciate the help.
I know that I have to use Ohm's law combined with Kirchhoff's Voltage to set up the two loop equations and one node equation and to calculate the unknown currents I1, I2, and I3. The diagram and... more
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10/11/17

A ball must cross 43m to clear a tower and land. If the launch ramps inclined 20deg above the horizontal, what must the initial velocity be to cross safely?
A ball must cross a horizontal distance of 43m to clear a tower and land safely. If the launch ramp is inclined 20 degrees above the horizontal, what must the initial velocity be to cross... more
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10/11/17

In comparing two unequal forces on a rigid body, is it possible to have the larger force produce less torque than the smaller force?
multiple choice question a. No. Larger forces always produce larger torques.b. Yes. If the larger force is farther from the fulcrum than the smaller mass.c. Yes. If the smaller force is farther... more
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10/11/17

Frankie shot an artillery shell at a 40 degree angle. The shell had a muzzle velocity of 230 m/s. How far did the shell go before it hit the ground?
I believe these are the knowns: X- Vxi= 230cos40 (176.19), vxi = vxf, ax=0. Y- Vyi= 230sin40 (147.84) vyf= -147.84, ay= -9.8. I used the equations vyf=vyi + at, to find t. I used Δx=vxit + .5at2. I... more
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10/11/17

The population of Boomtown is currently 3000 and expected to grow by 3.1% over the next year. What will its population be by then?
The population of Boomtown is currently 3000 and expected to grow by 3.1% over the next year. What will its population be by then?
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10/11/17

The concentration of a drug in the bloodstream is 300 milligrams er milliliter. After t hours the concentration is 75% of the level of the previous hour.
a) find a model for C(t), the concentration of the drug after t hours   b) determine the concentration after 8 hours
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10/11/17

s(t) = −4.9t2 + 9.8t + 171.5, where s is in meters. When does the object strike the ground?
An object is launched at 9.8 meters per second (m/s) from a 171.5-meter tall platform. The function that represents the object's height s at time t seconds after launch iss(t) = −4.9t2 + 9.8t +... more
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10/11/17

domain of f(x) = 13- x
I need help finding he domain of this function.
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10/11/17

What operator preserves the addition?
  Per example, these are operators that do not preserve the addition:   Ln (a+b) is not = ln a + ln blike (a+b)^3 is not = a^3 + b^3Maybe it has something with linear algebra since this question... more
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