I'm not too good at math at all I need help with these three problems any feedback or help will be greatly appreciated
1)108 divided by (6/7) 2nd power + 180 divided by (3/5) 2nd power
2) Find the base of a triangle with area 114 square inches and height 12 inches
3) 15q/16 x 8/30q multiply simplify if possible
These are the last three problems on my assignment...any help is greatly appreciated thank you
Be careful with parentheses; I am assuming you mean the following:
(15q)/16 * 8/(30q)
The 15q and the 30q cancel, and you obtain:
(15q is one half of 30q).
1/16*8/2 = 1/4.
(You could have even simplified it further by reducing the 8 and the 16 to a 1/2 ratio, which would have made the multiplication slightly easier: so you would have had 1/2*1/2 = 1/4).
I will assume that 1 and 3 mean what is shown in the attachment.
1. Take the first term:
.......................108.........108x7^2......108
108/(6/7)^2 = -------- = ---------- = ----- x 7^2 = 3x7^2 = 3x7x7 = 147
.....................(6/7)^2........6^2.........6x6
Now take the second term:
.......................180.........180x5^2......180
180/(3/5)^2 = -------- = ---------- = ------ x 5^2 = 20x5^2 = 20x5x5 = 500
.....................(3/5)^2.........3^2........3x3
So:
108/(6/7)^2 + 180/(3/5)^2 = 147 + 500 = 647
RonL