You can "plug in" the value for y from the top eq in the bottom one:
3(-2x+6) - x + 3 = 0
Simplify:
-6x + 18 - x + 3 = 0
-7x + 21 = 0
-7x = -21
x = 3
y = -2*3+6 = 0
Answer:
Raj is 27 yrs and Be is 14 yrs
Step-by-step explanation:
let the age of Raj be x and Ben be y
case_1
x + y =37
x = 37 - y
case_2
x - 5 = 2(y -5)
x-5 = 2y -10
37 - y -5 = 2y - 10
32 + 10 = 2y + y
42 = 3y
y = 14 yrs
now,
x = 37 - 14
x = 27
Answer:
.6
Step-by-step explanation:
6/10 is equivalent to 0.6 or 60% of 10
A. X is the number of years after 2000
2006-200 = 6 years.
Replace x with 6 and solve:
105(6)^2 + 680(6) + 4296 = 12,156
Answer for part a: 12,156
Answer for part B.
There was just over 12,000 in 6 years , to get to 21,500 would be a little over 9,000 more 9/12 = 0.75
6 years x .75 = 4.5 years
6 + 4.5 = 10.5 years round to 10 years for estimating purposes
Answer for part b: about 10 years
