(x + 5) (x + 2) = distribute the two terms in the first set of parentheses over the terms in the second set of parentheses......
x(x + 2) + 5(x + 2) =
x^2 + 2x + 5x + 10 = combine like terms
x^2 + 7x + 10
Each part will be 1/7 of 28 = 4
So
3 parts to 4 parts =
3(4) : 4(4) =
12 : 16
y=2^2+2(2)-1
y = 4 + 4 - 1
y = 8 - 1
y = 7
She rides 18/7 blocks in one minute
To see how long it would take her to ride 50 blocks, we have
50 / (18/7) =
50 * 7 / 18 = about 19.444 minutes
1 milion = 106
1 trillion = 1012
106 / 1012 = 1/106 = 1/1,000,000
Thus.....there are a million million in a trillion !!!!!
3-4 = 1/34 = 1/81
A line perpendicular to the given one will have a slope of -1.......so........using point-slope form, we have
y - 0 = -1 [ x - (-4)] =
y = -1 [x + 4] =
y = -x - 4 and that's in slope - intercept form .......just as heureka found........
Thanks, Solveit......that IS easier.......!!!
That's the thing about some problems - the simplest way is usually the best, but there may be other [more complex] methods, too......looks like I chose one of those.......!!!!
0.7% = .007
62000 * .007 = 434 acres
65% = 65/100 = 13/20 ....so we have
(13/20) * x = 260 multiply both sides by 20/13
x = 260 (20 / 13) = (260 / 13) * (20) = (20) * (20) = 400
