Answer:
Multiple answers in Step-by-step explanation
Step-by-step explanation:
x+y = 10
1 + 9 = 10
2 + 8 = 10
3 + 7 = 10
4 + 6 =10
5 + 5 = 10
x - y = 2
4 - 2 = 2
8 - 6 = 2
10 - 8 = 2
12 - 10 = 2
22 - 20 = 2
Answer:
don't have one
Step-by-step explanation:
We will use B for the number of baseball cards and H for the number of hockey cards.
B = 5H
B + H = 840
Use substitution by plugging 5H in for B in the second equation.
5H + H = 840
6H = 840
H = 140
If there are 140 hockey cards, then there are 5*140 = 700 baseball cards.
So the answer is 700.
The science books can be placed before or after the English books, so that’s two ways science-English or English-science.
There are 24 ways to arrange the 4 science books and 2 ways to arrange the English books.
So we have 24×2+2×24=96.