Answer:
-34
Step-by-step explanation:
a + b = -6
x + y + z = -2
We want 8a so multiply the first equation by 8
8( a + b) = -6*8
8a+8b = -48
We also want -7x so multiply the second equation by -7
-7(x + y + z) = -2*-7
-7x-7y-7z = 14
Add the two equations together
8a+8b = -48
-7x-7y-7z = 14
-------------------------
8a+8b-7x-7y-7z = -34
Rearranging the order
8a - 7x - 7z - 7y + 8b = -34
The general equation use to calculate increasing or decreasing values
P(t) = A(1 + r)^t
where:
P = New value
A = original or starting amount
r = rate (can be either increasing(+) or decreasing(-))
t = time period that increase/decrease take place.
So after 1 year at 3.8% interest
P = 7500(1 + 0.038)^1
P = 7500(1.038)
P = 7,785
Then after 1 year at 5.35 interest
P = 7500(1 + 0.053)^1
P = 7500(1.054)
P = 7,897.50
Answer:
Step-by-step explanation:
B (0,0) ; A (5,8)
Answer:
3w + 8 – w = 4w – 2(w – 4)
Step-by-step explanation:
The simplified forms of each of these equations are ...
- 2w +8 = 2w +8 . . . . . .the identity you're looking for
- 7m -5 = 7m +7 . . . . . . never true
- -3y +3 = -3y -6 . . . . . . never true
- -2v +6 = -2v -6 . . . . . . never true
