Answer:
35
Step-by-step explanation:
5x (5+3)=40-5=35
S = 1 + 3 + 5 + ... + 11 + 13 + 15
S = 15 + 13 + 11 + ... + 5 + 3 + 1
==> 2S = (1 + 15) + (3 + 13) + (5 + 11) + ... + (15 + 1)
There are 8 terms in the sum, so
2S = 8 * 16 = 128
S = 128/2 = 64
Answer:
the answer is 360. the first composite numbers are 4,6,8,9,10
and all the numbers above are divisible by 360
360÷4=90
360÷6=60
360÷8=45
360÷9=40
360÷10=36
Answer:
B.
Step-by-step explanation:
I plugged it into a graphing calculator which got me this.
-7 - 8 - (-8) - 7 × 0(14) - 14 - 30
(I think that's what that says)
Do PEMDAS
0(14) = 0
-7 × 0 = 0
You're left with -7 - 8 - (-8) - 14 - 30
Go from left to right
-7 - 8 = -15
-15 - (-8) = -7
-7 - 14 = -21
-21 - 30 = -51
