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
lianna [129]
3 years ago
13

On marys walk, she covered the 3 mile distance in one hour. However, the return trip took an hour and a half. What was her avera

ge speed?
Mathematics
2 answers:
Lana71 [14]3 years ago
6 0

Answer:

2.4 mph

Step-by-step explanation:

lesya [120]3 years ago
4 0

Answer:

Step-by-step explanation:

Speed = distance/time

Speed= 3/1= 3miles/hour

Return trip

Speed=3miles/1.5hour=2miles/hour

Average speed= initial + final trip= 2miles/hour+3miles/hour, then divide by 2

= 5/2=2.5miles/hour

You might be interested in
The points (-18,15) and (-20,15) lie on a circle with a radius of 1. Find the coordinates of the center of the circle.
FromTheMoon [43]
.hello :
an equation of the circle <span>Center at the w(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²
in this exercice : r = 1
</span><span>The points (-18,15) and (-20,15) lie on a circle with a radius of 1:
</span>(-18-a)²+(15-b)² = 1 ....(1)
(-20-a)² +(15-b)² = 1 ....(2)
solve this system :
(1) -(2) : (-18-a)² - (-20-a)² =0
(-18-a)² =(-20-a)² =0
( -18-a = -20-a) or (-18-a = - (-20-a))
1 )  ( -18-a = -20-a) no solution confused : -18=-20
2 ) -18-a =20+a
      -2a =38
      a = -19 
subst in (1) :(-18+19)²+(15-b)² =1
(15-b)² = 0.... 15-b = 0     .... b = 15
the center is :w(-19,15)
  
6 0
3 years ago
Sin2A+sin2B+sin2C÷4cosA/2.cosB/2.cosC/2​
Mrrafil [7]
The answer is c2 have a good day !!!! Bc you add all the numbers up and you will get it
3 0
2 years ago
The point that is needed?
KengaRu [80]
Due to a membership drive for a public television station, the current ;membership is 125% of what it was a year ago.  The current membership is 1200.  How many members did the station have last year
6 0
2 years ago
Find the midpoint and distance between each pair of points, with easy explanation and work !! will give brainliest.
rewona [7]
If we have 2 coordinates say: (x1,y1) and (x2,y2)

Then the formula for the midpoint is:

((x1+x2)/2,(y1+y2)/2)

And the formula for the distance is:

Sqrt((x2-x1)^2+(y2-y1)^2)

So here we have (-1,-4) and (-7,4)

The midpoint is:

((-1+-7)/2,(-4+4)/2) = (-8/2,0/2) = (-4,0)

The distance is:

Sqrt((-7- -1)^2+(4- -4)^2)
= sqrt((-6^2)+(8^2))
=sqrt(36+64)
=sqrt(100)
=10
6 0
2 years ago
A ski area has a high-speed lift that can move 2,400 skiers to the top of the mountain each hour. Write an expression describing
mihalych1998 [28]

Answer:

2,400h

Step-by-step explanation:

You multiply the amount of skiers per hour (2,400) by the amount of hours (h).

7 0
2 years ago
Other questions:
  • Which statements about the figure must be true? Check all that apply. Point B is the midpoint of .
    5·1 answer
  • The sales price of a car is 12,590 which is 20% off the original price what is the original price
    12·1 answer
  • What is the definition of indemnity?
    9·2 answers
  • Esperanza holds a bond for 10 years that has a 4% coupon rate and a $2000 par value.
    8·2 answers
  • Please Help and I will vote you as the brainiest
    12·1 answer
  • Suppose we have a population of N and we want to select a random sample of size n without replacement. What is the probability t
    7·1 answer
  • An auditorium has rows of seat 8 seats in each row. Kayla knows there are at least 70 seats but fewer than 150 seats in the audi
    15·1 answer
  • What is t×3/4 for t equals 8/9
    5·2 answers
  • The volume of the rectangular pyramid is 120 m^3. The height, h,
    13·1 answer
  • You and your sister are buying your mom a birthday gift. You paid $54 and your sister paid $22. What percentage did each sister
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!