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vagabundo [1.1K]
3 years ago
13

At Zach's auto shop each mechanic can change the oil 3 cars per hour. Zach can have up to 4 mechanics working at a time. In a re

lationship between number of oil changes per hour and number of mechanics working identify the independent variable dependent variable domain and range
Mathematics
1 answer:
Alex17521 [72]3 years ago
4 0

Answer:

We know that:

Each mechanic can change the oil of 3 cars per hour.

The number of mechanics can change between 0 and a maximum of 4.

Then we can write the variable:

Y = number of oil changes per hour.

Y = 3*X

Where X is the number of mechanics working.

The independent variable is X (number of mechanics), because is the one that Zach can change, and the dependent is Y (number of oil changes) because this depends on the value of X.

Now, the domain will be: {0, 1, 2, 3, 4}

The possible numbers of mechanics working at the same time.

And for the range we must replace those values in our equation, and see the possible values of Y.

Y(0) = 3*0 = 0

Y(1) = 3*1 = 3

Y(2) = 3*2 = 6

Y(3) = 3*3 = 9

Y(4) = 3*4 = 12

Then the range is: {0, 3, 6, 9, 12}

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Select the three expressions that are equivalent to 4/9
Deffense [45]

Answer:

8/18 or 12/27 or 16/36

Step-by-step explanation:

just add 4 on top and 9 on bottom and u should get all

6 0
3 years ago
The average speed of one team in a relay race is about 10 miles per hour. What is the speed in feet per second?
ki77a [65]

10 miles per second in feet per second is 14.67 feet per second

Step-by-step explanation:

The average speed of one team in a relay race = 10 miles per hour.

We need to find the speed in feet per second.

  • The conversion rule is:

             1 mile per hour = 1.467 feet per second

So, Speed in feet per second is:

 1 mile per hour = 1.467 feet per second

10 miles per hour = 10*1.467 feet per second

                             = 14.67 feet per second

So, 10 miles per second in feet per second is 14.67 feet per second

Keywords: Conversion of units

Learn more about Conversion of units at:

  • brainly.com/question/10940255
  • brainly.com/question/13005855
  • brainly.com/question/6436086

#learnwithBrainly

5 0
3 years ago
How do you write 220% as a fraction or mixed number in simplest form?
Kay [80]
220% is 2.20 in decimal form in fraction 2 1/5
7 0
3 years ago
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Of the 120 rooms in a hotel, 55% are single bed rooms, 30% are double bed rooms and the rest are deluxe rooms. How many deluxe r
Nat2105 [25]
Hey there !

Check the attachment.
Hope it helps you :)

6 0
3 years ago
Anybody know the answer?
dsp73

So since its a right triangle, we can use the pythagorean theorem, which is leg^2+leg^2=hypotenuse^2 . Since we know that 2 and 3 are our legs and x is our hypotenuse, we can solve the equation as such:

2^2+3^2=x^2\\ 4+9=x^2\\ 13=x^2\\ \sqrt{13}=x

Since √13 can't be further simplified, that is your final answer.

8 0
3 years ago
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