Friday
April 29, 2016

Posts by Harper

Total # Posts: 13

Math
Ok, but what is is the equation?
April 25, 2016

Math
Greg rode his bicycle at a constant speed of 20 miles per hour. Plot points on the graph to present the distances Greg rode after 1,2,3, and 4 hours (1 hour = 20 miles, 2 hours = 40, 3 hours = 60, 4 hours = 80 miles). Write an equation to represent the relationship between ...
April 25, 2016

Chemistry
if the pressure on a 1.00 L sample of gas is increased from 760. mm Hg to 2.00 atm at constant temperature what will the volume of the gas sample
April 20, 2016

Math
Please help me!!! The table below represents the velocity of a car as a function of time: time Velocity seconds (m/s) x f (x) 15 45 22 66 29 87 36 108 The average rate of change of the function between x = 15 to x = 29 is __________m/s2 and represents the car's acceleration
November 24, 2015

conceptual physics
you are in a plane traveling due North at 325 km/hr. The plane encounters a headwind (South) wind of 50 km/hr. What is the resultant velocity of the plane?
September 24, 2014

math
Evaluate 7 Σ (-1)^k(k-1) k=2
May 22, 2012

math
The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium.
September 8, 2010

Physics!
A piston has a diemaeter of .64 cm. A second piston has a diameter of 3.8 cm. determine the Force necessary on Piston A to support the 500.0 Newton weight on piston B (in the absence of friction.)
February 21, 2010

Read my question, and then look at this message for my results!
I think I understand how to do this... here's my work. 4a - 2 < a + 1 < 3a + 4 I seperated them into two pieces: 4a-2 < a + 1 and a + 1 < 3a + 4 Then, I added two to each side of the first one, and took away 1 from each side of the second one. 4a < a + 3 and...
January 26, 2009

Algebra
4a-2 (less than or equal to) a + 1 (less than or equal to) 3a + 4 I'm assuming I should put this on a line, like I did with some other problems on my worksheet, right? But I have no idea how I would show 4a-2 on a line! I have no idea how to do this. Thank you so much!
January 26, 2009

Algebra
Solve 3x +1 < 5 or 3x +1 > 4 By saying "solve," is it asking for me to show it on a line and in interval notation? Here's another: f(x) < 3 and f(x) > 4, where f(x) = 1/2x - 7 I have no idea how to solve this! Please walk me through it! Thank you so ...
January 26, 2009

Science Fair Project
Salty-- maybe pretzels or crackers, or pizza. Some kind of fruit or vegetable might be sour-- I know, like a lemon! Hope I helped!
January 26, 2009

Physics
A charge of 28.0 nC is placed in a uniform electric field that is directed verticall upward and that has a magnitude of 4.00*10^4 N/C. What work is done by the electric force when the charge moves (a)0.450 m to the right (b) 0.670 m upward (c) 2.60 m at an angle of 45 degrees ...
January 28, 2008

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