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nalin [4]
3 years ago
12

A carpenter uses 12 nails for each board. If there are 48 nails in a pound, how many pounds would be used for 100 boards

Mathematics
1 answer:
Anastaziya [24]3 years ago
4 0

Answer:

25

Step-by-step explanation:

12*100=1200/48=25

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the ratio of red marbles to blue marbles in a bag is 3:4. which of the the following is a possible total number of marbles?
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8 0
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2. Evaluate the expression e + c for e = 9 and c = 5.<br> a. 14<br> c. 15<br> b. 45<br> d. 4
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Mariulka [41]
I hope you know what '!' means
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basicalkly times every natural number including and before that number


nCr=\frac{n!}{r!(n-r)!}
so
\frac{60C3}{15C3}=
\frac{ \frac{60!}{3!(60-3)!} }{ \frac{15!}{3!(15-3)!} }=
( \frac{60!}{3!(60-3)!})(\frac{3!(15-3)!}{15!})=
( \frac{60!}{3!(57)!})(\frac{3!(12)!}{15!})=
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\frac{(60)(59)(58)}{(15)(14)(13)}=
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\frac{(6)(59)(58)}{(3)(7)(13)}=
\frac{6844}{91}
4 0
4 years ago
Read 2 more answers
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