Answer:
Step-by-step explanation:
The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X.
16
28-12=16
He needs 16 more hours of work to complete
Answer:
y=14/5 or 2.8
Step-by-step explanation:
3(-2)+5y=8
-6+5y=8
+6 +6
5y=14
/5y /5y
y=14/5
Hello,
let's assume j the john's age, m the mary's age.
<span>"John is twice as old as mary"==>j=2*m
</span>
<span>"the sum of their ages is 21" ==>j+m=21
==>2*m+m=21
==>3m=21
==>m=7
and j=21-7=14
</span>
