1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ELEN [110]
3 years ago
8

Brittany and Natalie, start cycling together from their home to school, which is 14.4 miles away. Natalie takes 40 minutes to re

ach school and Brittany reaches 20 minutes after Natalie.
How much faster is Natalie (in mph)?
Mathematics
1 answer:
prohojiy [21]3 years ago
3 0

Answer:

7.2

Step-by-step explanation:

1. Natalie needed 40 minutes to get to school. In hours 40 minutes is 40/60= 2/3 hour (because there are 60 minutes in an hour). so her speed is 14.4/(2/3)= 14.4*3/2= 21.6 mph.

2. Britany needed 40+20= 60 min. 60 min= 1 hour. so she needed 1 hour her speed is 14,4/1= 14.4mph

3. The difference 21.6-14.4=7.2 is the answer .

You might be interested in
James was trying to sleep one night but there was too much noise around him. His clock ticked every
g100num [7]

Answer:

<em>It will occur zero times between midnight and one o'clock.</em>

Step-by-step explanation:

<u>Least Common Multiple (LCM)</u>

Three events keep James from sleeping: his clock ticking every 20 seconds, a tap dripping every 15 seconds, and his dog snoring every 27 seconds.

All three events happened together at midnight. They will happen together again the first time the numbers 20, 15, and 27 have a common multiple. This is the LCM.

List the prime factors of each number:

20: 2,2,5

15: 3,5

27: 3,3,3

Now multiply all the factors the maximum number of times they appear:

LCM=2*2*3*3*3*5=540

(a) All the events will happen together again after 540 minutes.

(b) Since 540 minutes = 9 hours, this event won't happen again until 9 am. Thus, it will occur zero times between midnight and one o'clock.

4 0
3 years ago
Slope intercept of (2,-12) and (5,6)
nlexa [21]

Answer:

<em>The slope of the line is m=6.  </em>

<em>The y-intercept is (0,−24).  </em>

<em>The equation of the line in the slope-intercept form is y=6x−24.</em>

Step-by-step explanation:

The slope of the line passing through the two points P=(x1,y1) and Q=(x2,y2) is given by m=y2−y1x2−x1.

We have that x1=2, y1=−12, x2=5, y2=6.

Plug the given values into the formula for the slope: m=(6)−(−12)(5)−(2)=183=6.

Now, the y-intercept is b=y1−m⋅x1 (or b=y2−m⋅x2, the result is the same).

b=−12−(6)⋅(2)=−24.

Finally, the equation of the line can be written in the form y=mx+b.

y=6x−24.

Answer:

The slope of the line is m=6.

The y-intercept is (0,−24).

The equation of the line in the slope-intercept form is y=6x−24.

8 0
3 years ago
Read 2 more answers
Two cars are 750 miles apart and start moving towards each other. One car moves with the average speed of 40 mph and the other i
____ [38]
They will meet at 10:45 exactly.
5 0
3 years ago
Read 2 more answers
To draw a line segment perpendicular to XY passing through point x
Andrew [12]
What does perpendicular mean? Well, in elementary geometry it mean 2 lines that intersect at a right angle. (90°).

So for Part one. all you need to do is draw a straight line down from the point X. Name the end point of that line M. 

Now you will connect the line M and Z.

Thats it! I hope this helped!! :)




3 0
3 years ago
Read 2 more answers
25 POINTS!
ludmilkaskok [199]
I would say it is <span>D- (-4,-5), for counterclockwise you turn towards the right. At 180 degrees it would be (4, -5) if you turn again you would get (-4,-5) hope this helps</span>
3 0
3 years ago
Other questions:
  • Which box-and-whisker plot matches the data?<br><br> 28,29,29,31,34,39,41,46,47,49,52,54
    10·1 answer
  • Variable g is 8 more than variable w. Variable g is also 4 less than w. Which pair of equations best models the relationship bet
    6·2 answers
  • Please help asap! I don’t really understand
    5·1 answer
  • fill in the missing number in this newspaper report: houses cost 150.000 a year ago.they now cost is ?. this is a 25% increase w
    10·2 answers
  • Given: 4d=1/3(c-d) Proof= c=13d
    8·1 answer
  • OTHER ONE WASNT 50. 50 POINTS AND BRAINLIST IF GET RIGHT
    13·1 answer
  • I'll add a photo of the problem! ​
    5·1 answer
  • Help pleaseeeeeeeeee
    7·1 answer
  • Select all the ways to describe the number −15/2.
    11·1 answer
  • “Please help me I will give a BRAINLY and a THANKS and a 5 STAR RATE”
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!