Write the sum using summation notation, assuming the suggested pattern continues.

-3 + 6 + 15 + 24 + + 132

summation of negative 27 times n from n equals 0 to infinity
summation of negative 27 times n from n equals 0 to 15
summation of the quantity negative 3 plus 9 n from n equals 0 to infinity
summation of the quantity negative 3 plus 9 n from n equals 0 to 15

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

the first one

step-by-step explanation:

just id the test.

0.32

step-by-step explanation:

2.24/7