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morpeh [17]
2 years ago
9

About 13 out of 20 homes have a personal computer. On a street with 60 homes how many would you expect to have a personal comput

er
Mathematics
1 answer:
morpeh [17]2 years ago
3 0

Answer:39

Step-by-step explanation:

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Help me pleaseeee just a yes or no question
oee [108]
The points have to have the coordinate y=4 to be on the y=4 line

only the (1, 4) point matches this, so yes it is a solution, all others not and are therefore no
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3 years ago
The researcher has limited resources. He sends 9 emails from a Latino name, and 14 emails from a non-Latino name. For the Latino
deff fn [24]

Answer: 38.41 minutes

Step-by-step explanation:

The standard error for the difference in means is given by :-

SE.=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma^2_2}{n_2}}

where , \sigma_1 = Standard deviation for sample 1.

n_1= Size of sample 1.

\sigma_2 = Standard deviation for sample 2.

n_2= Size of sample 2.

Let the sample of Latino name is first and non -Latino is second.

As per given , we have

\sigma_1=82

n_1=9

\sigma_2=101

n_2=14

The standard error for the difference in means will be :

SE.=\sqrt{\dfrac{(82)^2}{9}+\dfrac{(101)^2}{14}}

SE.=\sqrt{\dfrac{6724}{9}+\dfrac{10201}{14}}

SE.=\sqrt{747.111111111+728.642857143}

SE.=\sqrt{1475.75396825}=38.4155433158\approx38.41

Hence, the standard error for the difference in means =38.41 minutes

3 0
2 years ago
Select the correct comparison
Anastaziya [24]

Answer:

A. typical value and the spread are both greater in set A.

5 0
3 years ago
Find the constant of variation k for the direct variation 4x = -y
7nadin3 [17]
Y=kx
solve for y

-y=4x
divide both sides by -1 aka times -1 both sides
y=-4x
y=kx

the constnat is -4
3 0
3 years ago
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The density of aluminum is 2.375 grams per cubic centimeter. Find the volume of a portion of a sheet of aluminum that has a mass
abruzzese [7]
This is the concept of density, volume and mass of different materials; To calculate for the volume of an aluminium material with density of 2.375 grams per cubic centimeter and a mass of 0.78 Kilogram we proceed as follows;

Density=mass/volume
making volume the subject we get;
volume=mass/density
thus;
mass=0.78 kg= 780 g
density=2.375 g/cm^3
Hence,
volume=780/2.375=328.421 cm^3
6 0
3 years ago
Read 2 more answers
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