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sdas [7]
3 years ago
12

You your driving from Austin to Houston with a constant speed of 120km/hr (75 mph). After 1.5 hr you stop for 0.5 hr. Then you c

ontinue driving with a new constant speed v2 and reach Houston 45 mins later. If the total distance from Austin to Houston is 265km, what is the speed v2?
Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

69

Step-by-step explanation:

i'm just hear to get points sorry

You might be interested in
Write an algebraic expression for the product of a number and 17
faltersainse [42]

Answer:

x · 17

Step-by-step explanation:

algebraic expression = variable

a number = x

product = multiplication

4 0
3 years ago
\Suppose that a person has an average heart rate of 88.6 beats/min. (Express your answers to problems in this section to the cor
vaieri [72.5K]

Answer:

He or she has 232,840,800 beats in five minutes.

Step-by-step explanation:

This question is solved by proportions.

In this question:

A year has 365 days.

Each day has 24 hours.

Each hour has 60 minutes.

Minutes in five years:

5*365*24*60 = 2,628,000 minutes.

How many beats in five minutes?

88.6 beats/min, 2,628,000 minutes. So the number of bears is:

88.6*2628000 = 232,840,800

He or she has 232,840,800 beats in five minutes.

8 0
2 years ago
4. You are traveling to Chicago for a job interview. You leave Toledo, Ohio, at 5:45 A.M. and arrive in Elkhart, Indiana, at 8:1
Dvinal [7]

Answer:

48 mph

Step-by-step explanation:

First we need to find the distance from Elkhart to Chicago. Toledo to Elkhart is 136 miles and Toledo to Chicago 244 miles.

So the distance from Elkhart to Chicago can be calculated, since Chicago is farther from Toledo than Elkhart, as: distance(Toledo to Chicago) - distance(Toledo to Elkhart). These distances are given in the problem, so the distance from Elkhat to Chicago is: 244 miles - 136 miles = 108 miles.

This problem basically wants to know the slowest you can be yet still ariving on time. If you are the minimum speed, you will arrive in Chicago exactly at 10:30 A.M. So you have 2 hours and 15 minutes(10:30 A.M - 8.15A.M.) to drive 108 miles.

15 minutes is a fourth of a hour, so you have 2.25hours to go through 108 miles.

The minimum speed you must maintain is 108mph/2.25h = 48mph.

5 0
3 years ago
What is the range of this exponential function y=9^×+2
matrenka [14]

Answer4/8 x 69

Step-by-step explanation:

You add Tekashi

5 0
3 years ago
A contractor estimated that one of his two brick layers would take 9 hours to build a certain wall and the other 10 hours. Howev
Dmitry [639]

Answer:

900

Step-by-step explanation:

Assume x brick

X*(1/9+1/10)一 10=X/5

X(19/90-1/5)=10

X*(1/90)=10

X=900

6 0
3 years ago
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