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horsena [70]
3 years ago
7

PLEASE HELP ME!!!!!!!! A: 30 B:16 C:20 D:18

Mathematics
2 answers:
IrinaK [193]3 years ago
7 0

Answer:

x=16

Step-by-step explanation:

Mazyrski [523]3 years ago
3 0

Answer:

16

Step-by-step explanation:

x+14=3x-18

x+32=3x

32=2x

16=x

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8 0
3 years ago
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
3 years ago
Read 2 more answers
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faltersainse [42]

2/3 is the answer because 6 in is the model and 4 ft is the actual

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2 years ago
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2 years ago
I need help please .
Black_prince [1.1K]

Answer:

-7-6b+3b-5

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2 years ago
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