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nirvana33 [79]
3 years ago
11

A runner ran 2/3 of a race in 21 minutes. They ran the entire race at a constant speed How long did it take to run the entire ra

ce?
Mathematics
1 answer:
Elenna [48]3 years ago
8 0

Answer:

31.5 minutes

Step-by-step explanation:

21 / 2 = 10.5

10.5 x 3 = 31.5

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A regression analysis between sales (y in $1000) and advertising (x in dollars) resulted in the following equation y = 50,000 +
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Answer:

D. increase of $1 in advertising is associated with an increase of $6,000 in sales.

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A car rental agency charges ​$33 per day to rent a car and ​$11.95 per day for a global positioning system​ (GPS). Customers are
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(a) b = (33+11.95)d + 55.5

(b) The bill for a 5 day rental is $280.25

Step-by-step explanation:

Given,

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Cost of gas = $3.70 per gallon

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a) Write a function rule for the total bill b as a function of the days d the car is rented.

Let,

d be the number of days.

Total bill = (Rent of car per day + Rent of GPS per day )* Number of days + Cost of tank

b = (33+11.95)d + 55.5

b) What is the bill for a 5 day​ rental?

Putting d=5 in above function

b = (33+11.95)*5+55.5\\b=(44.95)*5+55.5\\b=224.75+55.5\\b=280.25

The bill for a 5 day rental is $280.25

Keywords: function, addition

Learn more about addition at:

  • brainly.com/question/9738996
  • brainly.com/question/9729310

#LearnwithBrainly

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Answer:

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Think back of rise over run. Where the rise is 1 and 2 is run. Now Also, lets not forget the y intercept which you can easily obtain by looking where the line intercepts the y axis. Which in this case it would be 2.

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3 years ago
Read 2 more answers
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