Represent these consecutive numbers (assuming that they are all integers):
x
x+1
x+2
x+3
x+4
x+5
and so on
x+8
x+9 is the tenth number. x+9 = 10, so x = 9.
Think of it this way: there are 10 consecutive numbers, and the last one is 10.
Working backwards, we get the sequence 10, 9, ... 3, 2, 1.
The sum of such an arith sequence is equal to the count of the numbers times the average of the first and last terms:
sum here = 10(1+10)/2 = 5(11) = 55 (answer)
Answer:
<h2>A, D, and E</h2>
so basically, It has helped create new businesses. It has shaped the character of the country. It has given us benefits that other countries do not have.
Answer:
x<4
Step-by-step explanation:
-2x+20<2x+4
−2x+20−2x<2x+4−2x
−4x+20<4
−4x+20−20<4−20
−4x<−16
−4x/-4<-16/-4
x<4 its a open circle
Answer:
B
Step-by-step explanation:
1. Given mathematical statement
So,
2. Rewrite it as
So,
3. Combine like terms 
and 
So,
4. Add to both sides:
So,
5. Subtract 3 from both sides:
So,
6. Divide both sides by 5:
So,
