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2 years ago

If 265 identical boxes, each containing 24 books weigh a total of 12,720 pounds, how much does each book weigh?

Mathematics

2 answers:

Digiron [165]2 years ago

6 0

Each book weighs 2lbs

ivann1987 [24]2 years ago

3 0

Each book ways 2 pounds

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Amanda can proofread 17 reports in an hour, while Sally can proofread 28 reports in an hour. If they have 420 reports to proofre

mafiozo [28]

Answer:

9 hours and 20 minutes.

Step-by-step explanation:

In one hour, Amanda can proofread 17 reports.

In one hour, Sally can proofread 28 reports.

That means together, they can proofread 45 reports in one hour.

So we need to divide the total amount of reports by how much they can read in an hour:

420/45 = 28/3 = 9 1/3

The time it takes between the two of them is 9 hours and 20 minutes.

8 0

2 years ago

Read 2 more answers

A large department store is curious about what sections of the store make the most sales. The manager has data from ten years pr

Snowcat [4.5K]

Answer:

Hypotheses:

H0: There is no difference in the distribution of current sales.

H1: There is a difference in the distribution of current sales.

Enter the test statistic - round to 4 decimal places. 23.0951

Enter the p-value - round to 4 decimal places. 0.0003

Can it be concluded that there is a statistically significant difference in the distribution of sales?

Yes

please mark me brainliest!

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2 years ago

Sheryl creates a scatter plot to analyze how an increase in the outside temperature above 52°F affects the sale of hot chocolate

lora16 [44]

Answer:

1 and 2

Step-by-step explanation:

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2 years ago

Jankord Jewelers permits the return of their diamond wedding rings, provided the return occurs within two weeks. Typically, 10 p

dimulka [17.4K]

Answer:

$P(X$ $0.9619$

Step-by-step explanation:

From the given information;

the probability of getting returned p = 0.1

If eight rings are sold today, what is the probability that fewer than three will be returned;

According to binomial distribution

Binomial distribution is the probability of success or failure of an outcome of an experiment under observation which is usually repeated several trials. Binomial experiments are random experiment with fixed number of repeated experiment. If we cannot predict before head, the outcome of an experiment , the experiment is called a random experiment.

So , using binomial distribution to determine the probability that fewer than three will be returned;

i.e

$P(X$ $\sum_{x=0}^{2}\binom{8}{x}(0.1)^{x}(1-0.1)^{8-x}$

$P(X$ $0.9619$

8 0

2 years ago

Which graph represents the piecewise-defined function?

chubhunter [2.5K]

Answer: The correct option is 1.

Explanation:

The given piecewise function is,

$y=\begin{cases}-\frac{4}{5}x-3 & \text{ if } x$

It means if x<0, then

$f(x)=-\frac{4}{5}x-3$

If $x\geq2$ , then

$f(x)=3x-10$

Since the f(x) is defined for x<0 and $x\geq2$ , therefore the function f(x) is not defined for $0\leq x$ .

From the graph 2, 3 and 4 we can easily noticed that for each value of x there exist a unique value of y, therefore the function is defined for all values of x, which is not true according to the given piecewise function.

Only in figure the value of y not exist when x lies between 0 to 2, including 0. It means the function is not defined for $0\leq x$ , hence the first option is correct.

6 0

2 years ago