Step-by-step explanation:
An = A + (n - 1)d
We have An = 81, d = -3 and n = 18.
Hence A = An - (n - 1)d = 81 - (17)(-3) = 132.
Answer:
b)
Step-by-step explanation:
n²+n-42=0
Using mid-term break
n²+7n-6n-42=0
n(n+7)-6(n+7)=0
(n-6)(n+7)=0
Either,
n-6=0 OR n+7=0
n=6 OR n= -7
4/16= 1/4= 0.25
1/4= 0.25
Neither is greater; they are equivalent to each other.
Hope this helps! :)
Answer:
x = 5/3
Step-by-step explanation:
4x= x + 5
3x=5
x = 5/3
Answer:
5/8 is greater than 7/12
Step-by-step explanation:
5/8 is greater than 7/12
we need to make the denominators the same in order to solve the inequality
so, the easiest solution would be to multiply both denominators by each other, then doing that to the numerator ....
5 x 12 = 60 7 x 8 = 56
8 x 12 = 96 12 x 8 = 96
here we have our new fractions ---
which was originally
which was originally
now that we have the denominators the same... we can clearly see that
is greater than
therefore 5/8 is greater than 7/12