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kvv77 [185]
3 years ago
5

It takes one student 8 hours to wash all of the cars at a school car wash. If 6

Mathematics
1 answer:
hoa [83]3 years ago
4 0

Answer:

C. 1.3 hours

Step-by-step explanation:

It takes one student 8 hours to wash all the cars.

It will take each of 6 students 6 times less to perform same task:

  • 8/6 = 4/3 = 1.3 hours

So the correct choice is C. 1.3 hours

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29 mm<br> 120 mm<br> What is the perimeter?<br> millimeters
Svetlanka [38]

Answer:

I'm assuming it's a rectangle because you only specified two sides. If so, the perimeter is 298 millimeters.

Step-by-step explanation:

Add the two numbers up, 29 + 120 = 149, and multiply it by 2. You get 298 millimeters.

Another way is to add 29 + 29 + 120 + 120 = 298 millimeters.

6 0
2 years ago
Describe how to redraw a scale drawing with a new scale
mixas84 [53]
<span>in order to redraw a scale drawing with a new scale, here are the steps that you need to follow : 1. Measure up the current scale and the size of the drawing 2. Determine the ratio of the second scale 3. Adjust the size and dimension of the first drawing into the new scale based on the previously calculated proportion
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3 0
2 years ago
5y^2-6y-11-6y^2+2y+5
shusha [124]

Answer:

-y² - 4y - 6

Step-by-step explanation:

Step 1: Write expression

5y² - 6y - 11 - 6y² + 2y + 5

Step 2: Combine like terms (y²)

-y² - 6y - 11 + 2y + 5

Step 3: Combine like terms (y)

-y² - 4y - 11 + 5

Step 4: Combine like terms (constants)

-y² - 4y - 6

6 0
3 years ago
Christine Wong has asked Dave and Mike to help her move into a new apartment on Sunday morning. She has asked them both, in case
lozanna [386]

Answer:

0.3339 = 33.39% probability that both Dave and Mike will show up

Step-by-step explanation:

Probability of independent events:

If A and B are independent events, the probability of both happening at the same time is given by:

P(A \cap B) = P(A)P(B)

In this question:

Event A: Dave shows up.

Event B: Mike shows up.

Christine knows that there is a 47% chance that Dave will not show up and a 37% chance that Mike will not show up.

This means that P(A) = 1 - 0.47 = 0.53, P(B) = 1 - 0.37 = 0.63.

a. What is the probability that both Dave and Mike will show up

P(A \cap B) = P(A)P(B) = 0.53*0.63 = 0.3339

0.3339 = 33.39% probability that both Dave and Mike will show up

8 0
2 years ago
You do not need to flip the inequality sign when solving the inequality -3t + 7 ≥ 9. True False
nordsb [41]
Hello!

It is False because t is multiplied by a negative number, so to solve for it you will need to divide both sides by -3 which mean you have to flip the sign. 

Hope this helps!
7 0
2 years ago
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