Answer:
x+y=8
5.50x+7y=51.50
Step-by-step explanation:
First we add.
2 (4.99) + 3 (11.46) = $44.36
We were told that she has to pay 6% in tax, so all we have to do is multipy $44.36 by 0.06 and add that result to $44.36 and you will get this:
$44.36 * 0.06 = $2.66
$44.36 + $2.66 = $47.02
Answer:
-68
Step-by-step explanation:
19950/15 = 1330 tickets sold last year
1330 * 20 = 26,600 <== the school will make $ 26,600
Answer:
y = 21
x = 74
Step-by-step explanation:
-x + 4y = 10
x - 3y = 11
Let the first eqn be eqn 1 and the second be eqn 2
ie
- x + 4y = 10 --------eqn 1
x - 3y = 11 ----------eqn 2
From eqn 1, make x the subject of the formula
Carrying x over the equal to in order to change the sign from - to +
4y - 10 = x
Substitute the value of x in eqn 2
4y - 10 - 3y = 11
Collecting like terms
4y - 3y = 11 + 10
y = 21
The value of y is 21
Then, substitute the value of y into eqn 1
-x + 4y = 10
-x + 4(21) = 10
-x + 84 = 10
84 -10 = x
In order to get rid of the - sign
x = 74
Therefore,
x = 74
y = 21
