Algebra
Z-12 / 3=4
math
WRITE THE NUMBER 99 AS A PRODUCT OF PRIME FACTORS
calculus
3 ft/sec
physics
if four of length on a real home is represented by one inch on a scale model of the home, what legth on the scale model would represent one foot on the real home?
algerbra
my mom and I can not figure this one out please help!!!! -(a-3b+27) I need to simplify.. Mom states it will be -a+3b-27 I don't think you can do this Why would you just change the signs...
economics
I need to review a n example of an essay on a 700-1,050 word essay on one good that you have had experience purchasing and the good I chose is online college explaining factors that could cause possible chandes in supply and demand. Determine at least 2 substitutes there may b...
science
Which pairs of substances will form a buffer when mixed in equal concentrations?
Chemistry
I was given a question on an assignment and I can't figure it out. The question is A student collects 90ml of oxygen gas over water at 25c and a total pressure of 99.3kPa from the decomposition of KClO3. 2KClO3(s)-> 2KCl(s)+ 3O2 a) How many mols of O2 were collected? b)...
Physics
Find the net force on a,b and c. Given ma=363kg mb=517kg and mc=154kg. a<--0.5m-->b<--0.25-->c This was a question given to our class by our physics teacher ... he did not show us how to do it. So any help/steps involved to solve this problem would be much apprecia...
10th grade chemistry
in terms of chemical bonding why ammonia has a much lower melting point than water
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