In an arithmetic sequence, u_{3} = 12 and H_{10} = 40 The common difference is d. A. Write down two equations in u_{1} and d to show this information.
B. Find the values of c u_{1} and d.
Find the 100th term.

answer: ff

f

step-by-step explanation: f

ff

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

hi there!

the answer will be d: 2