X=one type that cost 9
y=one type that cost 8
total books=type1+type2
total books=13
x+y=13
the total cost=cost of each added together
cost of each=number of books times cost per book
total cost=108
9x+8y=108
we have
x+y=13
9x+8y=108
solve for x and y
multiply first equation by -8 and add to first equation
-8x-8y=-104
<u>9x+8y=108 +</u>
x+0y=4
x=4
subsitute
x+y=13
4+y=13
minus 4
y=9
4 of the $9
9 of the $8
thats how to solve
The rate is 12 per carton.
I believe its 120 minutes
Answer: x = -2
Step-by-step explanation:
1. Distribute the 2: (2 * 5x) + (2 * 5)
3x - 4 = 10x + 10
2. Subtract 3x from both sides
-4 = 7x + 10
3. Subtract 10 from both sides
-14 = 7x
4. Divide both sides by 7
-2 = x
or
x = -2
Answer:
21
Step-by-step explanation:
6 * 4 - 3 = (6 * 4) - 3 = (24) - 3 = 21
Multiplication first, and then subtract.