x is the number of adults and y is the number of children.
x + y = 12
<span>14x + 10y = 140
lets multiply the first equation by -10 and then add it to the second equation:
-10x - 10y = -120
</span>14x + 10y = <span>140
</span>-----------------------
4x + 0 = 20
x = 20/4
x = 5
then substitute in the original equation:
x + y = <span>12
</span>5 + y = <span>12
</span>y = 12 - 5
y = 7
therefore there were 5 adults and 7 children
I think the answer is 95°
Answer:
2/3
Step-by-step explanation:
The slope is 2/3 because when using the rise over run formula
your rise would be 2 and the run would be 3
Answer:
The two locker numbers are 68 & 69.
Step-by-step explanation:
Let one locker number be x then other will be , then other will be x+1.
We are given that sum is 137.
x+x+1=137
2x+1=137
2x=136
x = 68
The two locker numbers are 68 & 69.
