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pychu [463]
3 years ago
5

You earn $180 in interest over 8 months at 3%. How much did you invest?​

Mathematics
1 answer:
MatroZZZ [7]3 years ago
4 0

Answer:

19.44 (I think)

Step-by-step explanation:

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69+69+69+69+69+69+6?
ss7ja [257]

Answer:

420

Step-by-step explanation:

Simple addition! I double checked!

6 0
2 years ago
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Please help me on question 19
kobusy [5.1K]
Its is 9 cm. I know because the 13 cm side isn't equivalent  to the 13 cm side so if you measure it like i did you will get the answer 9cm.
4 0
3 years ago
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Eights rooks are placed randomly on a chess board. What is the probability that none of the rooks can capture any of the other r
erastova [34]

Answer:

The probability is \frac{56!}{64!}

Step-by-step explanation:

We can divide the amount of favourable cases by the total amount of cases.

The total amount of cases is the total amount of ways to put 8 rooks on a chessboard. Since a chessboard has 64 squares, this number is the combinatorial number of 64 with 8, 64 \choose 8 .

For a favourable case, you need one rook on each column, and for each column the correspondent rook should be in a diferent row than the rest of the rooks. A favourable case can be represented by a bijective function  f : A \rightarrow A , with A = {1,2,3,4,5,6,7,8}. f(i) = j represents that the rook located in the column i is located in the row j.

Thus, the total of favourable cases is equal to the total amount of bijective functions between a set of 8 elements. This amount is 8!, because we have 8 possibilities for the first column, 7 for the second one, 6 on the third one, and so on.

We can conclude that the probability for 8 rooks not being able to capture themselves is

\frac{8!}{64 \choose 8} = \frac{8!}{\frac{64!}{8!56!}} = \frac{56!}{64!}

7 0
2 years ago
Need help!!!! Pleaseeeee
Amanda [17]

Answer:

for #2 I'm pretty sure he makes $10 per hour

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2 years ago
I have no friends so I want two people to answer my statistical question for me to complete my box chart. The question is how ma
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Answer:

5 Games!

Step-by-step explanation:

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3 years ago
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