elijahjacksonrp6z2o7

01.08.2020 • 

Mathematics

Now that Reggie has reached the hotel, he needs to drive from the hotel to the client’s office. If there is no traffic on the roads, the journey from the hotel to the office will take 1 hour by car. To learn how much time it will actually take to get to the office, he checks the traffic department’s information site. According to the website, traffic is heavy and the total duration of the route he is about to take should be less than 3 hours. Write an inequality for y, the number of extra hours Reggie will spend in the car because of traffic.

Ответ:

hannaho64

16.11.2021

Mathematics

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Answers

Part 1: 36z²-9z+8

Part 2: 5z³+4z²+16z-23

Part 3: Yes

Explanation

Part 1

(11z²-4z+2) + (-2z+3+12z²) + (3-3z+13z²) = 11z²+12z²+13z²-4z-2z-3z+2+3+3

= 36z²-9z+8

Part 2

(5z³ + 40z² + 7z − 15) - (36z²-9z+8) = 5z³ +40z²-36z²+7z+9z-15-8

=5z³+4z²+16z-23

Part 3

Yes.

The polynomials 5z³+4z²+16z-23 and 36z²-9z+8 form a system analogous to the integers, which are closed under the operations of addition and subtraction.

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