Answer: the final ballance is 26445.35
The total compound interest is $14,455.35.
Answer:
Step-by-step explanation:
let score in fourth test=x
88+98+79+x=80×4
265+x=320
x=320-265=55
Answer:
65 degrees.
Step-by-step explanation:
It's hard to explain, but I'll try:
The outside of the first two angles is 105 and 140. Half a whole angle is 180. So, you do
180-140=40. The inside is 40.
And then 180-105=75.
Then you add the two and subtract them from 180:
40+75= 115
180-115=65
Voila!

so if x = -1, let's plug that in the second equation
-5(-1)+y = 5
5+y = 5
y = 0