Y=3x+2 when x=-3
=> y= 3(-3)+2 = -9+2 =-7
Answer:
C.
Step-by-step explanation:
I cant really explain it but i had the same question and had the answer worked out on the paper
Hope it helps :3 (tell me if it was right or wrong so i know if i need to fix something later)
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
We know that a standard form of equation in quadratic is
We are given an equation as
To find a,b and c, it is sufficient to compare the given equation with std form
Comparing with
equate the coefficients of corresponding terms.
So we have
Answer:
Step-by-step explanation:
Let's call Joseph "J", Mark "M", and Kevin "K" for ease. We need a system of equations to solve this, 3 equations for 3 unknowns. The first equation is
J + M = 230. The second equation is
J + K = 130. The third equation is
M = 3K. Sub that 3K into the first equation and get
J + 3K = 230. Now take th second equation and solve it for J:
J = 130 - K. Now sub 130 - K into the re-written first equation to get a whole new equation in terms of K only:
130 - K + 3K = 230 and
2K = 100 so
K = 50
Kevin has $50