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Vlad [161]
3 years ago
6

URGENT PLEASE HELP Which of the following tables represents a relation that is a function?

Mathematics
1 answer:
NARA [144]3 years ago
6 0
The answer is A because the x has different numbers
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Mr. Harrow has eight boys and six girls in his Honors Pre-calculus class. If he randomly chooses two students, one at a time, wh
Sergeu [11.5K]

Answer: 15/91 which is choice B

=================================================================

There are two methods to find this answer.

Method 1) We have 6 girls and 8+6 = 14 students. The probability of picking a girl is 6/14 = 3/7. After the first girl is chosen, we have 5 girls left out of 14-1 = 13 students overall. The probability of picking another girl (assuming the first selection was a girl) is 5/13. Multiply these probabilities: (3/7)*(5/13) = (3*5)/(7*13) = 15/91

--------------------

Method 2) We can use the nCr combination formula. Order does not matter.

We have nCr = 6 C 2 = 15 ways to pick 2 girls. See the attached image below for the steps (figure 1)

Out of nCr = 14 C 2 = 91 ways to pick 2 students. See the attached image below for the steps (figure 2)

So that's another way to get the answer 15/91.

5 0
2 years ago
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Solve<br> *<br> x + 12/2=<br> 3(x + 7)
zheka24 [161]

Step-by-step explanation:

x+6=3x+21

2x=-15

x=-7.50

6 0
3 years ago
Read 2 more answers
PLZ HELPPP WHATS THE ANSWER??
Nuetrik [128]
Length = 3cm
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2 years ago
How do I do this cause I don’t get it
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