Answer:
I don't know how to expand but I can simplify please mark me
Step-by-step explanation:
2(x + 7) + 3(x + 1)
=2x + 14 + 3x + 3
=2x-3x + 3-14
=x+11
Answer: 10,000,000 + 100,000 + 20,000 + 800 + 60 = 10,120,860
Step-by-step explanation:
Answer:
Distrubutative property
Step-by-step explanation:
Answer:
Answer: Sum of first 90 terms is Option d. 11655
Step-by-step explanation:
We have to find the sum of first 90 terms of the sequence -4,-1,2,5,8......
First we find the 90th term of the sequence
As we know the formula A(n)= A(1)+(n-1)d
Given from the sequence
A(1) = (-4)
n=90
d = 3
So A(n) = -4+(90-1)3
= (-4)+89×3
= 263
Now we know formula for the sum of any sequence is
Sum S(n) = 
Now we know n= 90
A(1) = -4
A(n) =263
Now we put the value in the formula
S(n)= 
= 45×259
= 11655