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CaHeK987 [17]
2 years ago
5

Whats 2+2? free brainliest btw​

Mathematics
2 answers:
Rufina [12.5K]2 years ago
5 0

(╯°o°)╯ answer is 4… I think?

Debora [2.8K]2 years ago
3 0

Answer:

Step-by-step explanation: 4 the answer is 4

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A physics exam consists of 9 multiple-choice questions and 6 open-ended problems in which all work must be shown. If an examinee
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Answer: A) 1260

Step-by-step explanation:

We know that the number of combinations of n things taking r at a time is given by :-

^nC_r=\dfrac{n!}{(n-r)!r!}

Given : Total multiple-choice questions  = 9

Total open-ended problems=6

If an examine must answer 6 of the multiple-choice questions and 4 of the open-ended problems ,

No. of ways to answer 6 multiple-choice questions

= ^9C_6=\dfrac{9!}{6!(9-6)!}=\dfrac{9\times8\times7\times6!}{6!3!}=84

No. of ways to answer 4 open-ended problems

= ^6C_4=\dfrac{6!}{4!(6-4)!}=\dfrac{6\times5\times4!}{4!2!}=15

Then by using the Fundamental principal of counting the number of ways can the questions and problems be chosen = No. of ways to answer 6 multiple-choice questions x No. of ways to answer 4 open-ended problems

= 84\times15=1260

Hence, the correct answer is option A) 1260

5 0
3 years ago
In the auditorium there are 7 Red chairs and 43 blue chairs what's the ratio of number of red chairs to the total number of chai
Mandarinka [93]

Answer:

7 to 50

Step-by-step explanation:

8 0
3 years ago
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A-10......C-he didn't notice that a domino has number that will equal 49 in multiplication but will not add up to be if its less than 4 dominos
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3 years ago
Can anyone help me out? thanks
Alik [6]

Answer:

450 cm

Step-by-step explanation:

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The minor arc length of 15 is in the same ratio to the circumference as  the 2 angles , so the circumference = 30 * 15 - 450 cm.

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Answer and explanation:

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What is the probability that more than half of the sample of 100 computers would not need warranty service?

What is the probability that out of sample of 100 more than 20% would require warranty service?

B. If our sample of 100 computers of that brand and model reveals that 30 computers need warranty service, does this give a valid conclusion that all such computers in the population would require about 30% warranty service or less?

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3 years ago
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