Will mark brainliest and ill give u points and u . solve this system of equations: t = 2c + 10, t = 4c

c = 5 and t = 20

Step-by-step explanation:

t = 2c + 10, t = 4c

so

2c + 10 = 4c

-2c = -10

c = 5

t = 4(5)

t = 20

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.