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Leona [35]
3 years ago
7

A train travels at 100 miles per hour. An equation can be written that compares the time (t) with the distance (d). Define the d

omain and range.
a. the domain is time (t) and the range is distance (d).
b. the domain is time (t) and the range is 100.
c. the domain is 100 and the range is time (t).
d. the domain is distance (d) and the range is time (t)
Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

The answer would be, A the domain is time and the range is distance.

Step-by-step explanation:

The train is travelling at 100 miles per hour, thus the equation would be d=100t meaning that the distance equals 100 times the amount of time. Now, that means that the input is the amount of time it's been going, and the input is the domain. if the input is the domain,  then the only thing left to be the input (range) is the y value, or, in this case, the d value.

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Marcus is comparing the costs of two cellular phone services.
kolbaska11 [484]

The true statements about Marcus graph are:

  • The initial cost of phone service 1 is greater than the initial cost of phone service 2
  • The unit rate of phone service 2 is greater than the unit rate of phone service 2

<h3>How to determine the true statement</h3>

From the complete question, we have the following parameters:

<u>Phone service 1</u>

  • Initial cost: $40
  • Rate: $8.50 per service

<u>Phone service 2</u>

  • Initial cost: $30
  • Rate: $10.50 per service

By comparing the above parameters:

  • The initial cost of phone service 1 is greater than the initial cost of phone service 2
  • The unit rate of phone service 2 is greater than the unit rate of phone service 2

The above statements represent the true statements about the Marcus' graph

Read more about graphs at:

brainly.com/question/14323743

7 0
2 years ago
sarah the cheetah ran 100 meters at a speed of 16.8 meters per second. an olympian ran the 100 meter dash in 9.6 seconds . how m
Alexus [3.1K]

Answer:

3.6477seconds

Step-by-step explanation:

Sarah the cheetah ran the 100 meters in 5.9523s. Subtract 5.9523 from 9.6

7 0
3 years ago
Use set builder notation to represent the following set. {... -3, -2, -1, 0} {x | x Z, x ≤ 0} {x | x N, x ≤ 0} {x | x R, x ≤ 0}
IceJOKER [234]

Answer:

\boxed{\boxed{\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}}}

Step-by-step explanation:

Set builder notation-

It is a notation for representing a set by enumerating its elements and stating the properties that its members must satisfy.

The given set is,

\left \{.... -3, -2, -1, 0 \right \}

This set is comprised of all negative integers. So symbol Z should be used in this case.

The set builder notation for this set is,

\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}

7 0
4 years ago
A fleet of nine taxis is to be dispatched to three airports in such a way that three go to airport a, five go to airport b, and
krok68 [10]

A fleet of nine taxis is to be dispatched to three airports in such a way that three go to airport A, five go to airport B, and one goes to airport C. In how many distinct ways can this be accomplished?

2.44) Refer to Exercise 2.43. Assume that taxis are allocated to airports at random.

a) If exactly one of the taxis is in need of repair, what is the probability that it is dispatched to airport C?

b) If exactly three of the taxis are in need of repair, what is the probability that every airport receives one of the taxis requiring repairs?

So, my answer to 2.44a is 1/9. Hopefully this is correct at least :)

For 2.44b, my guess was

(3C1)(1/3)(2/3)2 * (5C1)(1/3)(2/3)4 * 1/3

The solutions manual on chegg (which seems to be riddled with errors) says something completely different. Is my calculation correct?

8 0
3 years ago
Read 2 more answers
How to solve step by step -3(2x-3)&lt; 3 ?
likoan [24]
-3(2x-3)<3
(-3(2x-3))(-1)<3(-1)
3(2x-3)>-3
(3(2x-3))/3>-3/3
2x-3>-1
2x-3+3>-1+3
2x>2
2x/2>2/2
x>1

5 0
4 years ago
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