There is no choice of integers
such that the left hand side is a rational number.
Answer:
D. 76.5
Step-by-step explanation:
The summation sign means that it is the sum of the expression for all values of n upto 6.
n = 2 below the summation sign means that n starts from 2.
∑(n-1)!/2 from n= 2 to n=6
= (2-1)!/2 + (3-1)!/2 + (4-1)!/2 + (5-1)!/2 + (6-1)!/2
= 1!/2 + 2!/2 + 3!/2 + 4!/2 + 5!/2
= 1/2 + 2*1/2 + 3*2/2 + 4*3*2/2 + 5*4*3*2/2
= 1/2 + 2/2 + 6/2 + 24/2 + 120/2
= 0.5 + 1 + 3 + 12 + 60
= 76.5
Answer:
What is 5 + 2(3x + 4)+ x?
the answer is 7x + 13
Step-by-step explanation:
from the quwstion What is 5 + 2(3x + 4)+ x
we aproach the problem using BODMAS
we have;
5 + 6x + 8 + x
=7x + 13
19 is the distance between those 2
