(1/2(AC) * DC) / (1/2(BC) * DC) = 3/4
AC / BC = 3/4
The coordinate of C be (x, y), then
((4(1) + 3(8))/7, (4(-9) + 3(-2))/7) = ((4 + 24)/7, (-36 - 6)/7) = (28/7, -42/7) = (4, -6)
Step-by-step explanation:

or equivalently

We often write variable side-byside without the multiplication sign in algebra. It also applies to terms with indices. For instance,

We may, often also add a dot at the middle of both terms as another version of multiplication sign for better readability if the terms are more complicated, for instance

and

Answer:
1375
Step-by-step explanation:
10*25+15*75 = 1375
Answer: 96 inches
Step-by-step explanation:
There are 12 inches in 1 foot.
Therefore there are 8*12 inches in 8ft
= 96 inches