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EastWind [94]
2 years ago
12

dalanay enlarges a photograph tahst is 3 inches long and 2 inches wide. the length of the enlarged photograph is 15 inches. what

is the width of the enlarged photograph, in inches?​
Mathematics
1 answer:
7nadin3 [17]2 years ago
5 0

Answer:

10 inches

Step-by-step explanation:

Length of photograph, L1 = 3 inches; Length of enlarged photograph, L2 = 15 inches; Width of photograph, W1 = 2 inches; Width of photograph, W2 = ?

Hence, L1/L2 = W1/W2

∴ W2 = (L2*W1)/L1 = (15 X 2)/3 = 10 inches

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Sharon wants to estimate the percentage of parents that use cloth diapers. She asks a randomly selected group of 75 parents whet
Sloan [31]

Answer: Parents.

Step-by-step explanation:

  • In statistics , a population is a large group of similar things or members by researcher's perspective from that he/ she draw a finite subset also known as sample to follow his / her research.

Here, Sharon wants to estimate the percentage of parents that use cloth diapers.

i.e.Researcher = Sharon

Since Sharon will reach parents about her objective of whether they use cloth diapers.

So , Population = Parents

If She asks a randomly selected group of 75 parents whether or not they use cloth diapers , then Sample size is 75 .

Therefore, the population is : "Parents."

5 0
2 years ago
A production system has a total daily output of 400 units and a total labor of 350 hours, what kind of productivity measure can
fomenos

Answer:

1.14 products per hour of labor

Step-by-step explanation:

To calculate the daily productivity would be the amount of products per hour of labor.

That is: 400 products / 350 hours of labor, and that is approximately 1.14 products per hour of labor.

Which means that for every hour of labor, 1.14 products are produced in one day, which would be a factor of productivity.

4 0
2 years ago
Hazel covered a box with felt. The dimensions of the box are shown in the figure below:
maria [59]

<span>$36.36 because the area of the prism is 404sq. in. , 404x0.09 (for nine cents per sq. in.) = 36.36
</span>
Hope this helps!! :)
8 0
2 years ago
A company manufactures two products X and Y. Each product has to be processed in three departments: welding, assembly and painti
Tems11 [23]

Answer:

100x+120y = z

z= $ 63000

Step-by-step explanation:

Product               Welding          Assembly       Painting                Cont. to profit

X                              2x hours            3x hours          1xhour         =        $100x

Y                              3y hours            2y hours           1y hour        =       $120y

<u>                                                                                                 </u>

Total hours          1500 hours        1500 hours     550 hours

available

Let X represent product X

Let Y represent Product Y

2x + 3y = 1500

x + y = 550

y= 550-x

2x + 3(550-x) = 1500

2x + 1650- 3x = 1500

150 = x

y = 550-150

y = 400

Objective Function Z = 100x + 120y

Z = 100(150) + 120( 400)

Z = 15000+48000

Z = $63000

7 0
2 years ago
Twenty-five juniors from a University volunteer to allow their Math GRE test scores to be used in a study. These 25 juniors had
fgiga [73]
Let's start first by writing down the given:
σ = 100
sample mean = 450
sample size = 25

These information, plus the fact that we know that the population is approximately normally distributed, would tell us that we can use the normal distribution curve in analyzing the problem.

A confidence interval of the mean is just a range statistically estimated to contain the population mean. For a 90% confidence interval, we would look at the Z-table and see where 90% of the data falls. We'll notice that it will fall within 1.645 standard deviations of the mean.

Next, we look for the standard error of the mean. This will have a formula
error= \frac{standard deviation of population}{ \sqrt{N} }

The standard error would just therefore be equal to
\frac{100}{ \sqrt{25} }= \frac{100}{5}  =20

Lastly, we just get the product of the standard error and 1.645 and add it to 450 for the maximum value and subtract it to 450 for the minimum value.
450-20(1.645)=417.1
450+20(1.645)=482.9

ANSWER: 417.1<μ<482.9

8 0
2 years ago
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