Answer:
You are 14 years old. Your cousin is 11 years old.
Step-by-step explanation:
Let x = cousin
Let x + 3 = you
x + x + 3 = 25
Solve out left side
2x + 3 = 25
Subtract both sides by 3
2x = 22
Divide both sides by 2
x = 11
11 + 3 = 14
2x^2 + 17x -21 cannot be factored nicely, if it was +21 you could, but the zeros for this have to gotten using the quadratic equation
-b +/- (b^2-4ac)^1/2
2a
so
-17 +/- (17^2-4(2)(-21))^1/2
2(2)
-17 +/- (457)^1/2
4
so the zeros are roughly 1.094 and -9.594
Answer: c(x)=-2 x2 + 16x + 168
Step-by-step explanation: I hope this helps if im wrong im srry!
B (1,0). -2 + 3 = 1. -2 + 2 = 0.
9.24 is twenty four percent of thirty eight point five.