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Phoenix [80]
3 years ago
7

A company needs 713 slices of pizza for a company party. If each pizza is cut into 8 slices, about how many whole pizzas should

the company order? A) 60 B) 70 C) 80 D) 90
Mathematics
1 answer:
alukav5142 [94]3 years ago
3 0

Answer:

D

Step-by-step explanation:

To find the number of WHOLE pizzas needed, we need to divide the total number of slices needed (713) by 8 slices. Thus

\frac{713}{8}=89.125

<em>because we can't order fractional pizza, we need to round up. So we will need 90 pizzas.</em>

<em>Correct answer is D.</em>

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In a certain​ country, the true probability of a baby being a girl is 0.469. Among the next seven randomly selected births in th
-BARSIC- [3]

Answer:

The probability is 0.995 ( approx ).

Step-by-step explanation:

Let X represents the event of baby girl,

The probability of a baby being a girl is, p = 0.469,

So, the probability of a baby who is not a girl is, q = 1 - 0.469 = 0.531,

Also, the total number of experiment, n = 7

Thus, by the binomial distribution formula,

P(x)=^nC_x(p)^x q^{n-x}

Where, ^nC_x=\frac{n!}{x!(n-x)!}

The probability that all babies are girl or there is no baby boy,

P(X=7)=^7C_7(0.469)^7(0.531)^{7-7}

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Hence, the probability that at least one of them is a boy​ = 1 - P(X=7)

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8 0
3 years ago
Dude is making 12 pounds of nut mixture with macadamia nuts and almonds. Macadamia nuts cost $9 per pound and almonds cost $5.25
pshichka [43]

Number of pounds of macadamia nuts is 8 pounds and number of pounds of almonds is 4 pounds.

<u>Step-by-step explanation:</u>

Step 1:

Given total pounds of mixture = 12 pounds, cost of macadamia nuts per pound = $9, cost of almonds per pound = $5.25, total cost of mixture per pound = $7.75.

Let number of pounds of macadamia nuts be x and number of pounds of almonds be 12-x.

Step 2:

Form an equation using the above information.

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⇒ 9x + 63 - 5.25x = 93

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Number of macadamia nuts is 8 pounds.

Step 3:

Calculate number pounds of almonds

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