<span>X= math problems
y= science problems
x +y =42
x= y+10
Substitute: (y+10) + y =42
Combine y: 2y +10=42
Solve for y: y= 16
There are 16 science questions and 26 math questions</span>
Answer:
Step-by-step explanation:
10 dozen is equal to 120 so ratio is 800/120 or 80/12
same ration on the other side but 200/x.Cross multiply and u get 3
Answer:
in this equation, x = -1
Step-by-step explanation:
hope this helps!
7.85 dollars because 3.14 is the price of one pound your buying 2.5 so you times 3.14 by 2.5