8. C
9. C
10. A
Hope this helped!
The answer to this is step 2 because they multiplied when they should of subtracted the 10 and the 12.
Step-by-step explanation:
Blue portion is a rectangle:
Answer:
Step-by-step explanation:
There might be a shorter way of doing this and a better one as well, but here is how I did it.
Let the three numbers be
Solution
Note that these three numbers are consecutive and even.
Twice the smallest number is 2 * (2n - 2)
20 more than the second number is 2n + 20
Now equate them.
2(2n - 2) = 2n + 20 Remove the brackets.
4n - 4 = 2n + 20 Add 4 to both sides
4n - 4 + 4 = 2n + 20 + 4
4n = 2n + 24 Subtract 2n from both sides.
4n - 2n = 2n - 2n + 24
2n = 24
Now stop
Answers
- The middle number is 24
- The smallest number is 24 - 2 = 22
- The largest number is 24 + 2 = 26
Check
22*2 = 44
The middle number = 24 + 20 = 44
