Total # Posts: 22
Pre Algebra, Check my answers?
You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes ** experimental; the result is found by repeating an experiment ...
April 13, 2016
The weight W that a horizontal beam can support varies inversely as the length L of the beam. Suppose that a 4-m beam can support 1000 kg. How many kilograms can a 17-m beam support?
February 21, 2016
give a example of the hundred thousand digit of a six-digit even numbers is 3 more than the thousand digit,which is twice the ones digit.give at least four numbers that satisfy the given condition.
June 10, 2015
give me a example of the hundred thousand digit of six-digit even numbers is 3 more than the thousand digit,which is twice the the ones digit.give at least four numbers that satisfy the given condition.
April 9, 2015
I'm trying to figure out what went wrong during my freshman chem lab. We were figuring out the enthalpy of formation of MgO(s). MgO(s) + 2H+(aq) -> Mg2+(aq) + H2O(l) dHrxn = -334.83kJ/mol Mg(s) + 2H+(aq) -> Mg2+(aq) + H2(g) dHxrn = -1105kJ/mol H2(g)+ 1/2O2(g) -> ...
April 5, 2013
tangent of theta is opposite / adjacent. So your theta (angle) here is 50, your opposite is 27, and we don't know the adjacent. So do simple algebra & bring x to the other side by multiplying so you have tan50 * x = 27, now divide tan50 * x by tan50 to get x by itself. Now...
February 11, 2013
What direction is the bee traveling? Anyways, i don't know...But the trains will collide in exactly 1 hour since the one is going 30 and the other 20. Their distance is 50 km apart. Is it asking if the bee is going 80km/hr, how long will it take to travel 50 km? If so then...
February 11, 2013
I remember this from last year - you should have a table of the heat of enthalpy somewhere in your book. From this you'll need to get the values of delta H (heat) of each mixture. The left side (HCl + NaOH) is the reaction and the right side is the result - you'll ...
February 10, 2013
It was kind of windy the other day bring the temperature from -10 degrees centigrade to 18 degrees centigrade in 24 hours. How much did the temp. rise in 24 hours? on average, how much per hour did the temp. rise?
September 9, 2012