The Campbells bought a $298,000 house. They made a down payment of $47,000 and took out a mortgage for the rest. Over the course of 15 years they made payments of $2042.14 on their mortgage until it was paid off. a) what was the total amount they ended up paying for the house (including the down payment and monthly payments?

B) How much interest did the pay on the mortgage?

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

isocolese triangle

we know that the line connect a and b is the hyptonuse

so first find the hypotonuse length using the distance formula, call the length c

since it is an isocolese triangle, the lengths of the legs are the same

using pythagorean theorem,

in this case, a=b since isocolese triangle so we get

or

we can find c so we can find the distances

we know that if we draw 2 circles, each has center at a and b, and find where they intersect, we can the 2 possible locations for c

if a has center at (xa,ya) and b has center at (xb,yb), then we can solve where

and

intersect to find where they intersect

i'm not going to put an example because i have to go to class. i hope this explanation is enough

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q