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lozanna [386]
3 years ago
14

Researchers found that a person in a particular country spent an average of 5.5 hours a day watching TV in 2010. Assume the popu

lation standard deviation is 1.8 hours per day. A sample of 39 people averaged 6.3 hours of television viewing per day. Does this result support the findings of the​ study?
Mathematics
1 answer:
zmey [24]3 years ago
5 0

Answer:

Yes

Step-by-step explanation:

Because 6.3hours is still in the range 5.5+/-1.8 hours

Therefore the result support the findings of the study.

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The points (-1,-6) and (5, a) fall on a line with a slope of 8. What is the value of a ?
erica [24]
The answer will be : -8
4 0
3 years ago
Which of the following lists is in order from smallest to largest?
Yuri [45]
C. 1.5%, 0.125, 3/20, 1 4/5 is the correct answer
3 0
3 years ago
Read 2 more answers
A spherical cantaloupe is cut in half. The visible cross-section has an area of 5252 in2. The volume of the cantaloupe is _____
artcher [175]

Answer:

V = 286319.465 cm3

Step-by-step explanation:

First, you have to find the radius to be able to find the volume of a sphere.

The equation for the area of a circle is pi r^2 so you have to so some algebra.

5252 = pi r ^2

5252/pi = r^2

1671.76352 = r^2

sqrt(1671.76352) = r

r = 40.8872048

then you do the equation for the volume of a circle which is 4/3 pi r^3

4/3 pi (40.8872048)^3

4/3 pi 68353.7373

4/3 214739.599

286319.465

V = 286319.465 cm3

6 0
2 years ago
Select all of the following that are quadratic equations.
goldenfox [79]

Answer:

1. x² + 3x - 5 = 0

2. x² - x = 3 x + 7

4. 7x² + 14x = 0

Step-by-step explanation:

A Quadratic equation takes the form;

ax² + bx + c = 0

a, b, c are constants and a cannot be 0.

Options 1 fits this;

x² + 3x - 5 = 0

Option 2 fits this as well;

x² - x = 3 x + 7  

x² -x - 3x - 7 = 0

x² - 4x - 7 = 0

Option 4 fits this as well if c = 0.

7x² + 14x + 0 = 0

8 0
3 years ago
Please Find the solution to the following system using substitution or elimination: y = 3x + 7 y = -2x -3
Dmitrij [34]
Answer: A (-2, 1)
see image explanation attached

5 0
3 years ago
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