R=2K which equals 2R=4K
4(R=K+8) or 4R=4K+32
Subtract first equation from second equation.
2R=32 so R=16
Plug into first equation
16=2K so K=8
Now plug both into second equation to check
4R-4K=4(R-K)=4(8)=32 it works
So Roberto is 16 and Katie is 8
(In 4 years R would be 20 and K would be 12 which has a difference of 8)
Answer:
$7,287.50
Step-by-step explanation:
Use the formula A=P(1+rt), where P is the starting amount, R is the rate in %, and T is the time in years.
Answer:
Infinite number of solutions.
Step-by-step explanation:
y = -7x - 2
y + 3 = -7x + 1
Subtract 3 from both sides:
y = -7x - 2
- this is the same as the first equation.
We can put any number of valid combinations of x and y into this equation.
So there are infinite solutions.
Mp. 146.54
dis . 15%
sp= 146.54 - 15 % of 146.54
=124.559
P(4-4)=p(0)=0
0=0
true, they are equivilent
