MATHEMATICS MIDDLE SCHOOL

Johnny wants to know how many students in his school enjoy watching science programs on TV he posted this question to all 26 students in His science class and he finds that 75% of his class and enjoyed watching science programs on TV he claims that 75% of the school student population would be expected to enjoy watching science programs on TV. Is johnny making a valid inference about this population

Answers

Answer 1
Answer: Yes Johhny is making a valid inference because he settled his inferences based on the votes. 
Answer 2
Answer:

Answer:

No, it is not a valid inference because his classmates do not make up a random sample of the students in the school

Step-by-step explanation:

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The sum of three numbers is 91. The second number is 5 more than the first. The third number is 4 times the second

Answers

Answer:

The first number:11

The second number: 16

The third number: 64

Step-by-step explanation:

Let the first number be x

The second number be 5+x

The third number be 4(5+x)

The sum: x+5+x+4(5+x) =91

Open the brackets

x+5+x+20+4x=91

Arrange in like terms

x+x+4x+5+20=91

6x+25=91

6x=91-25

6x=66

Divde both sides by 6( the coefficient of x)

x=11

5+x=16

4(5+x) =64

The outdoor temperature declines 3 degrees each hour for 5 hours.what is the change in temperature at the end of those 5 hours ?

Answers

15 degrees less than the original temperature you started with
If you multiply 3 degrees x 5 hours. = 15 total degrees in 5 hours

What is the constant of variation for the following: 5y=10x?

Answers

y and x are the two varibles so 5 and 10 are your contants

A coat regularly sells for $59.00. It is on sale for 20% off. What is the sale price of the coat?

Answers

Original price : $59.00 ( 100 % )
100 % - 20 % = 80%.

100 % - $59.00
1 % - $59.00 / 100 = $0.59
80 % - $0.59 x 80 = $47.20

Hence, the sale price of the coat is $47.20.

Hope this helps you! :)
59*.2=11.80
59-11.80=$47.2
Answer= $47.20

Which equation shows the correct use of the Power of Products Property?• (2x⁵y²)³=6x⁵y²

• (2x⁵y²)³=6x¹⁵y⁶

• (2x⁵y²)³=8x⁸y⁵

• (2x⁵y²)³=8x¹⁵y⁶

Answers

The power of products property states that for numberenclosed in a bracket or parenthesis, if it is raised to a power, it must bemultiplied to the power of the enclosed number no matter how different the baseis. You cannot add it because it is not raised. You can only add it if theyhave the same base. But in this problem, you will just multiply it. The breakdownof the solution to this problem is shown below. So,
• (2x⁵y²)³=(21x3x5*3y2*3)= 6x15y6

75,000 grams= _____kilograms

Answers

75,000 grams equals 75 kilogram so the answer is H.

All you have to do is divide 75,000/1,000=75 because a kilogram is 1,000 grams.

Thank You!
1000 gram ewuals 1 kilogram so 75000 grams equals 75 kilograms
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