Step-by-step explanation:
3x + 5y = 50
x + 5y = 31
use substitution
x = 31-5y
3(31-5y) +5y = 50
93 -15y + 5y = 50
93 - 10y = 50
--10y = -43
y = 43/10 = $4.30 for kids
now solve for x
x + 5(4.30) = 31
x + 21.5 = 31
x = $9.5 for adults
The standard form of a quadratic equation is
,
where
,
, and
are coefficients. You want to get the given equation into this form. You can accomplish this by putting all the non-zero values on the left side on the equation.
In this case, the given equation is

Since
is on the right side of the equation, we subtract that from both sides. The resulting equation is

Looking at the standard form equation
, we can see that

Answer:
2/3
Step-by-step explanation:
Convert the fractions to decimals.
2/3 = 0.666
4/5 = 0.8
14/18 = 0.777
34/50 = 0.68
From the decimals, 0.666 is the only option which falls between 0.5 and 0.75.
Answer:
5, 9/36, -12/16, -23/35
Explanation:
Convert to decimals then rearrange.
Answer:
Step-by-step explanation:
