posted by Mickey .
1.The base of a triangle is 5cm greater than the height. The area is 33cm(2). Find the height and the length of the base?
4. Find the GCF
For this one I think the gcf is 5 Is this correct?
5. Factor by grouping
1. height -- x
base -- x+5
solve (1/2)x(x+5) = 33
(you will end up with a quadratic which factors very easily)
2. Do you mean x^2 - 7x ??
3. do you mean 5a^6 - 1080a^3 ??
I see a common factor of 5a^3
5. retype the question, don't know what the -* is supposed to mean. Also use 8x^3 for "8 x cubed"
1. B = H + 5
Area = 1/2 BH
Substitute H + 5 for B in the second equation and solve for H. Put that value in the first equation to find B. Check by putting both values into the second equation.
2. X^2 = X squared online
X^2 + 7X = X(X + 7)
I will let you do 3 using the same process.
4 is correct.
5. I'm not sure what this formula is.
8X^3 - X^2 - X + 1 (?)