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Mathematics

1 answer:

Ket [755]3 years ago

6 0

Here are the answers:
3. A
2.B
4.C
1.C

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The probability that Brian wins a raffle is given by the expression n n + 2 . Write down an expression, in the form of a combine

LUCKY_DIMON [66]

Answer:

$\frac{2}{n+2}$

Step-by-step explanation:

Given

Let the total probability be 1

Probability that Brian wins a raffle = n/n+2

Probability that Brian does not win a raffle = 1 - Probability that Brian wins a raffle

Probability that Brian does not win a raffle = 1 - (n/n+2)

Probability that Brian does not win a raffle = $\frac{n+2-n}{n+2}$

Probability that Brian does not win a raffle = $\frac{2}{n+2}$

Hence required fraction is $\frac{2}{n+2}$

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3 years ago

Element X decay radioactively with a half life of 14 minutes. if there are 490 g of element X how long to the nearest 10th of a

IgorC [24]

Answer:

27.9

Step-by-step explanation:

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3 years ago

WHAT IS THIS ANSWER

zysi [14]

Answer:

Step-by-step explanation:

I beleive you just count the dots thats what i did

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4 years ago

Read 2 more answers

Help me please:’)

Lelechka [254]

Using the condition given to build an inequality, it is found that the maximum number of junior high school student he can still recruit is of 17.

<h3>Inequality:</h3>

Considering s the number of senior students and j the number of junior students, and that he cannot recruit more than 50 people, the inequality that models the number of students he can still recruit is:

$s + j \leq 50$