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sammy [17]
3 years ago
9

The gas mileage for Peter's car is 21 miles per gallon when the car travels at an average speed of 50 miles per hour. The car's

gas tank has 17 gallons of gas at the beginning of a trip. If. Peter's car travels at an average speed of 50 miles per hour, which of the following functions fmodels the number of gallons of gas remaining in the tank thours after the trip begins? 21 A. f(t) = 17 - 50T B. f(t) = 17 - 500 21 17-500 C. f(t) 17-210 50 D. f(t) = 21​
Mathematics
1 answer:
alexandr1967 [171]3 years ago
6 0

Answer:

f(t)= 17- 50t/21

Step-by-step explanation:

distance covered after t hours= 50t miles

number of gal.=50t×1/21 =50t/21 gal.

f(t)=starting-consuming= remaining

= 17-50t/21

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6 0
3 years ago
Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows t
algol [13]
Annie's total earnings from her initial savings, $12, and from babysitting should be equal or more than 30. Annie's total earnings from babysitting may be expressed as $6n. The inequality should be,
 
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Solving for x,
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Thus, the answer is the second among the choices. 

</span>
6 0
3 years ago
Read 2 more answers
Please answer and explain how you received that answer, these are the three problems I had trouble with out of 18
Varvara68 [4.7K]
9) x.14 = 6.26 ==> 14x=156 ==> x=11.1

12) OAB = Right Triangle : (27+24)² = 24² + AB² (Pythagoras)
 ==> 51² =24² + AB²  ==> 2,601 = 576 + AB² ==> AB² = 2,601 - 576 = 2,025
==> AB² = 2015 AND AB =√2025 = 45
Sorry I can't read the last page
5 0
3 years ago
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