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shusha [124]
3 years ago
13

2y3 - 27 + 5y2 + (25 / 5)

Mathematics
1 answer:
zubka84 [21]3 years ago
5 0

Answer:

The correct option is A

Step-by-step explanation:

The expression is

2y3 - 27 + 5y2 + (25 / 5)

Substitute the value of y=2 in the expression:

=2(2)³-27+5(2)²+(25/5)

We know that 2³ means multiply 2 three times

2³= 2*2*2=8

Likewise 2²=2*2=4

=2(8)-27+5(4)+(25/5)

=16-27+20+25/5

Now take the L.C.M which is 5

=80-135+100+25/5

Solve the values in the numerator:

=70/5

=14

Thus the correct option is A....

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Two brothers, Mark and Charles, each inherit $31000. Mark invests his inheritance in a savings account with an annual return of
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Answer:

$1,085

Step-by-step explanation:

Data provided in the question:

Amount inherited and invested i.e principle = $31,000

Annual return for Mark on savings account = 2.9% = 0.029

Annual return for Charles on CD = 6.4% = 0.064

Now,

The Interest earned by Mark in 1 year = principle × Rate × Time

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Therefore,

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3 years ago
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Neporo4naja [7]

Answer:

<h2>See the explanation.</h2>

Step-by-step explanation:

We need to observe total 9 days.First we need to choose any 4 days from the 9 days. From these total 9 days, 4 days can be chosen in ^9C_4 = \frac{9!}{4!\times5!} = \frac{6\times7\times8\times9}{4!} = 126 ways.

The probability of occurring an auto related accident is \frac{52}{100}.

Similarly, the probability of not occurring an accident is \frac{100 - 52}{100} = \frac{48}{100}.

Hence, the required probability is 126\times(\frac{52}{100} )^4(\frac{48}{100} )^5.

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172.546

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