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Reil [10]
3 years ago
11

Starting at home, Jessica traveled uphill to the grocery store for 18 minutes at just 20 mph. She then traveled back home along

the same path downhill at a speed of 60 mph. What is her average speed for the entire trip from home to the grocery store and back?
It takes 45 minutes for 4 people to paint 5 walls. How many minutes does it take 6 people to paint 4 walls?

It takes 52 minutes for 5 people to paint 5 walls. How many minutes does it take 20 people to paint 20 walls?

It takes 48 minutes for 7 people to paint 7 walls.How many minutes does it take 20 people to paint 20 walls?

Mathematics
1 answer:
N76 [4]3 years ago
3 0

Try this solution with short explanation; note, the suggested way is not the shortest one; the answers are marked with red colour.

Task no. 2: another solution is 45* (4/5) / (6/4) = 24 min.

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Which sample fairly represents the population? Check all that apply. measuring the heights of every fiftieth person on the schoo
Minchanka [31]
<span>measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school

wrong as should be boys only

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5 0
3 years ago
Read 2 more answers
What is 931 divided by 6
agasfer [191]
932 divided by 6 is 155.166666667

7 0
3 years ago
A professor using an open source introductory statistics book predicts that 10% of the students will purchase a hard copy of the
Likurg_2 [28]

Answer: The professor was not accurate with his hypothesis.

Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternate hypothesis: At least one proportion of the student will differ from the others.

Step-by-step explanation: To check if the professors hypothesis were inaccurate.

What percentage of student bought a hard copy of the book.

(25 ÷ 200) × 100 = 12.5%

What percentage of the student printed it from the web.

(85 ÷ 200) × 100 = 42.5%

What percentage of the students read it online.

(90 ÷ 200) × 100 = 45%

This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.

Therefore; the null hypothesis are

P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternative hypothesis will state that at least one of the proportion will be different from the others.

5 0
3 years ago
The parent function f(x) = 1.5x is translated such that the function g(x) = 1.5x + 1 + 2 represents the new function. Which is t
Gennadij [26K]

graph of g is the the graph of f shifted 3 units above

i dont know if the translator translate that coreclty

6 0
3 years ago
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Predict the number of seventh grade students in his school whose favorite beverage is milk.
loris [4]

Answer:

696 students.

Step-by-step explanation:

From the  sample of students 58/125 of them like milk.

So we can predict that 1500 * 58/125 of the 1500 students like milk.

This comes to (1500/125) * 58

= 12 * 58

=  696.

4 0
3 years ago
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