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svp [43]
3 years ago
15

The main printer in the Ivy Tech library can produce an average of 211 copies every hour. For every 25 pages, it costs the colle

ge $0.47 for electricity and supplies. If the library is open from 9AM to 9PM, how much money does the college use on printing each day?
Mathematics
1 answer:
lidiya [134]3 years ago
3 0

Answer:

~48$

Step-by-step explanation:

0.47/25=0.0188

0.0188×211=3.9

12 cause of 9am to pm

12×3.9=47$

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A supermarket employee is making a mixture of cashews and almonds. Cashews cost $7 per pound, and almonds cost $5 per pound. The
Paraphin [41]

Answer:

Step-by-step explanation:

It has to be less than 6 ,  x+y<6

Now in inequalities that have 7 and 5 in them, 7 represents the cost of first ingredient and 5 the cost of second ingredient.multiply each of that number with quantity of that ingredient and sum both up we get the price of the mixture.

the mixture has to be less than 30 that means that it costs less than 30 but 30 can be the answer as well.

The last answer is 7x + 5y 

4 0
3 years ago
What is 1,198,145 rounded to the nearest ten thousand?
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It would be 1,200,000 because the 9 is in the ten thousand place.
8 0
3 years ago
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An automobile manufacturer has given its van a 31.3 miles/gallon (MPG) rating. An independent testing firm has been contracted t
Fynjy0 [20]

Answer:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

Step-by-step explanation:

Information given

\bar X=31.1 represent the sample mean  

\sigma=1.3 represent the population standard deviation

n=140 sample size  

\mu_o =31.3 represent the value that we want to test  

\alpha=0.02 represent the significance level for the hypothesis test.  

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true mean is equal to 31.3 MPG, the system of hypothesis would be:  

Null hypothesis:\mu =31.3  

Alternative hypothesis:\mu \neq 31.3  

Since we know the population deviation, the statistic is given by

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}} (1)  

Replacing we got:

z=\frac{31.1-31.3}{\frac{1.3}{\sqrt{140}}}=-1.82  

The p value for this case would be given by:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly different from 31.3 MPG

4 0
3 years ago
The width and height of a television screen are 80 in and 45 in, respectively. Find the area of this television screen.
r-ruslan [8.4K]

Answer: C: 3600


Step-by-step explanation: When trying to find the area of a rectangle or a square all you need to do is multiply the Length and the Width (L * W). The equation you need to solve this is 80 * 45 = x. The answer is 3600.


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How did the world's countries solve the problem that mean solar time varies continuously as a traveler's longitude changes
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To solve the problem related to mean solar time where it varies continuously as a traveler's longitude changes, scientists divided the earth into 24 time zones (adding other partial zones to it). All the countries in each time zones had to keep the mean standard time assigned to it.

<h3>What is Mean Standard Time?</h3>

This is the time that is measured by synchronizing clocks in different geographical locations within the same time zone to the same time.

See the link below for more about Mean Solar Time:

brainly.com/question/26063957


8 0
2 years ago
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