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3 years ago

There are 8 pencils in a package. How many packages will be needed for 28 children if each child gets 4 pencils?

2 answers:

7 0

The answer will be 14 packages. This is the answer because you do 28 times 4 which you will get 112. This is the number of pencils needed in all. Then you do 112 divide by 8. 112 divide by 8 is 14.
~ JZ

lisov135 [29]3 years ago

4 0

First, lets figure out how many pencils we will need. so we can do that by 4 pencils x 28 children and we get 112. Then if there are 8 pencils in a package, we divide 112 by 8 and get 14

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What is the greatest common factor in these two sets of 51 and 18

Monica [59]

The greatest common factor would be 3 because 3x17=51 and 3x6=18

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3 years ago

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A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50% of this population prefers t

NeX [460]

Answer:

0.09

Step-by-step explanation:

Given that 50% of this population prefers the color green.

Let p the probability that one person selected from the population prefer the green color of the car. So,

p=0.05

There is only two chance, any person either prefer the green color or not, assuming this holds true for every person, so the mentioned population can be assumed as Bernoulli's population.

By using Bernoulli's theorem, the probability of exactly r success of n randomly selected from the Bernoulli's population is

$P(r)=\binom{n}{r}p^{r}{(1-p)}^{n-r}\cdots(i)$

Here, 15 buyers are randomly selected, so, n= 15 and

$r= \frac1 3 \times 15=5$

So, by using equation (i), the probability that exactly 5 buyers would prefer green out of 15 randomly selected buyers is

$P(r=5)=\binom{15}{5}(0.5)^{5}{(1-0.5)}^{15-5}$

$=\binom{15}{5}(0.5)^{5}{0.5}^{10}$

$=\binom{15}{5}(0.5)^{15}$

=0.0916

Hence, the probability that exactly 5 buyers would prefer green out of 15 randomly selected buyers is 0.09.

3 0

3 years ago

Which statement about sutter’s work are true?

Gnoma [55]

Answer:

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Step-by-step explanation:

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Simplify -6+ 13 need help really badly

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Answer:

Step-by-step explanation:

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3 years ago

Suppose you have $1750 in your savings account at the end of a certain period of time. You invested $1500 at a 3.72% simple annu

Scorpion4ik [409]

Answer:

4.48 years

Step-by-step explanation:

The formula for simple interest is

A = P(1+r*t), with A being the final amount, P being the initial amount, r being the interest rate, and t being the time. Plugging our values in, we get

1750 = 1500(1+0.0372 * t)

Note that 3.72 was translated into 0.0372 as changing percents to decimals requires dividing by 100

Expanding our equation, we get

1750 = 1500 + 55.8 * t

subtract 1500 from both sides to isolate the t and its coefficient

250 = 55.8 * t

divide both sides by 55.8 to get t

t = 4.48

5 0

3 years ago