What is 57/7 ? Division

Mathematics

2 answers:

polet [3.4K]3 years ago

6 0

Answer:

8.142

Step-by-step explanation:

marta [7]3 years ago

4 0

Answer: You can decide to choose any of these but they're all the same!

8 R 1

Decimal form:

8.1 (if you round it to the nearest tenths).

8.14 (if you round it to the nearest hundredths).

8.143 (if you round it to the nearest thousandths).

Step-by-step explanation:

When you begin the division, you have to think of what is the highest number that is less than 57 that is a multiple of 7, that number is 56. 56/7 is 8 which is where I got the 8.

57 - 56 = 1 which is the remainder.

If you want to write it in decimal form, you divide the 1 by 7 and since you'll get a decimal number with 0.14.. you had that number to 8, which gives you your answer in decimal form!

Hope that helped!

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Members from 6 different school organizations decorated floats for the homecoming parade. How many different ways can first, sec

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<h3>Answer: 120 different ways</h3>

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Explanation:

There are...

6 ways to select the first place winner
5 ways to pick the second place winner
4 ways to pick the third place winner

We start with 6, and count down by 1 each time we fill up a slot. We stop once the third slot is filled or accounted for. The countdown is to ensure that we don't pick the same person twice. From here, multiply those values: 6*5*4 = 30*4 = 120

Interestingly, this is equal to 5! = 5*4*3*2*1 = 120 because the 3*2 becomes 6 and that *1 at the end doesn't affect things. Though usually results of permutation problems don't always end up like this. The order matters because a result like ABC is different from BAC, where A,B,C,D,E,F are the six school organizations.

As a slightly longer way to do the problem, you can use the nPr formula which is $_nP_r = \frac{n!}{(n-r)!}$ where n = 6 and r = 3 in this case. The exclamation marks indicate factorial. If you go this route, you should find that one of the steps will involve 6*5*4.