X-3y+z=-15
X=-15+3y-z
Is it what you asking about?
Answer:
a) 2891.012 
b) 0.496 
Step-by-step explanation:
We know 1 US gallon = 3.79 L
Also
1L =61.024 
and given 1 cubit - 18 in
a) gas tank = 12.5 Us gal. = 12.5×3.79 = 47.375L=47.375×61.024= 2891.012 
b) as 1 cubit =18 inches
or
18 inches = 1 cubit
==> 1 inch = 1/18 cubit =0. 055555556 cubit
Taking cube on both sides;
==>
×0.055555556×0.055555556=0.000171468 
so size of gas tank = 2891.012×0.000171468=0.495715375=0.496 
Answer:
The total amount of money received at the lemonade stand was $49.50
Step-by-step explanation:
Let
x ---> the number of small drinks sold
y ---> the number of medium drinks sold
we know that
The stand sold 72 drinks
so
----> equation A
The ratio of small drinks to medium drinks sold was 5:3

----> equation B
substitute equation B in equation A


Find the value of x

Find out the total amount of money received at the lemonade stand

Answer:
are you doing mathematical models a too?
Step-by-step explanation:
Answer:
For Part 1 Wednesday and Thursday
For Part 2 it's tuesday
Step-by-step explanation:
Because it's asking which was made