9514 1404 393
Answer:
Step-by-step explanation:
Let 'a' and 'e' represent Alvin's and Elga's ages, respectively.
a = e-12 . . . . . Alvin is 12 years younger
a + e = 86 . . . the sum of their ages is 86
__
Substituting for 'a' gives ...
(e -12) +e = 86
2e = 98
e = 49
a = 49 -12 = 37
Alvin is 37; Elga is 49.
yeah where are the answer choices? that's the only way we cam help
Answer: There are 13 children.
Step-by-step explanation:
1. Let's call x the number of children in the classroom. We know that each child received 4 oranges, except 5 of them.
2. There were 32 oranges in total.
3. We can write this problem as an equation that represents the number of oranges distributed, as follows:

4. Now we solve the equation to find the value of x:



5. There are 13 children in the classroom. 8 of them received oranges and the rest did not.
Answer:
21.2 yd
Step-by-step explanation:
8 + 6 + 7.2 = 14 + 7.2 = 21.2