18 ft. just took this test
Answer:
x=6
Step-by-step explanation:
9x2=18
54-18=36
6x=36
Divide both sides with 6
x=6
Answer:
y= -1/2x-6.5
Step-by-step explanation:
Answer: the number of terms of the series is 201 numbers
the sum of the first 20 terms is 890
the number of terms of the series is 
the series have:
u1 = 5
d = 4
=> u(n) = 5 + 4.(n - 1)
=> u(20) = 5 + 19.4 = 81
so the sum of the first 20 terms is (81 + 5).20/2 = 890
( u1 is the first number of the series, d is the distance between front and rear numbers, u(n) is the overall term of the sequence, u(20) is the 20th of the series)
Step-by-step explanation:
Answer:

Step-by-step explanation:
