Chair height=c desk height=d (idk if its the chair that is taller or the desk but im guessing its the chair. if not you can switch the variables and it should still work)
d=29 3/4
c-d=-10 1/4
c=d-10 1/4
c=29 3/4 +10 1/4
c=40
Answer:
2.3732
Step-by-step explanation:
Answer:
81 boys
Step-by-step explanation:
There are two ways to figure this out. Both ways are correct.
1. Fractions
9/7=x/63
from here you cross multiply
7x=9×63
7x=567
now to get x by itself you divide by 7
x=567÷7
x=81
2. If you have 63 girls and 7 girls to each group. You can divide 63 by 7 and find out how many groups you have which is 9. 9 groups, 7 girls each. For every 7 girls there are 9 boys. 9×9 ( 9 groups, 9 boys each)
9×9=81
