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Oksi-84 [34.3K]
4 years ago
7

1/7 • 5/3= 5/21 what is 5/21 in simplest form?

Mathematics
2 answers:
jarptica [38.1K]4 years ago
4 0
It is in simplest form
MariettaO [177]4 years ago
3 0
5/21 is the in simplest form. You can't simplify it anymore.
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What is 5C3?<br> A. 35<br> B. 10<br> C. 14<br> D. 28
galben [10]

Answer: B. 10

-5C3 or 5 choose 3 refers to how many combinations are possible from 5 items, taken 3 at a time. To calculate combinations, we will use the formula nCr = n! / r! ... * (n - r)!, where n represents the total number of items, and r represents the number of items being chosen at a time.

-10 is the total number of all possible combinations for choosing 3 elements at a time from 5 distinct elements without considering the order of elements in statistics & probability surveys or experiments. The number of combinations for sample space 5 CHOOSE 3 can also be written as 5C3 in the format of nCr or nCk.

Step-by-step explanation: Hope this help :D

5 0
3 years ago
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Alex is thinking of a doubles fact. The sum is greater than the sum of 7 7 but less than the sum of 8 9. What fact is Alex think
elena-14-01-66 [18.8K]
There has to be something in between the two numbers, for example 7 x 7 or 7+7 not just 7 7. Without the equation it would be highly impossible to answer :D
6 0
3 years ago
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1/4x+2=-4 how do you do this step by step?​
lutik1710 [3]
It’s a process of bringing one variable to the side with different forms of mathematical properties. First, subtract 2 from the left side and add it to the right side. Then divide 1/4x by 1/4 to get x alone, and divide the right side (-2) by 1/4, which will give you the answer to x. Let me know if you need help with anything else!
8 0
3 years ago
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What is 4.2X-1.4Y=2.1-2X
enot [183]

4.2x - 1.4y = 2.1 - 2x

Subtract 4.2x

-1.4y = 2.1 - 6.2x

Divide by -1.4

y = -3/2 + 9/2x

Answer: y = 9/2x - 3/2

7 0
4 years ago
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Daniel purchased a 1 year CD, c, from a bank. He bought it at an annual interest rate of 6%. After 1 year, Daniel cashes in the
zhenek [66]

Step-by-step explanation:

if I understand correctly, then he bought a CD with a balance of c and an annual interest rate of 6%.

now, after this one year the CD is worth (the account balance is) c + 6% = 100% + 6% = 106% = 1.06×c

6 0
3 years ago
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