Answer:
No, we can't make 20 by adding 5 odd numbers.
Step-by-step explanation:
An odd number is represented by 2n+1, the sum which we got is represented in this form, so it's obviously an odd number. But 20 is an even number, so sum can't be 20.
Answer:
Un= 1+(n-1)6
Step-by-step explanation:
a = 1
d= 7-1= 13-7= 6
and using the formula, Un= a+(n-1)d
Answer:
100 :)
Step-by-step explanation:
Well we know that total percentages always equals 100 so x + 45 = 100. You should get x = 55%
