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
Luda [366]
3 years ago
7

If you help I will give you brainliest

Mathematics
1 answer:
hammer [34]3 years ago
8 0

9514 1404 393

Answer:

  5 miles

Step-by-step explanation:

Time/speed/distance problems can be worked a number of ways. Here, we want to know the distance walked. We know the total time and the total distance and the two different speeds. So, we can use a variable to represent the value we want to know: w = distance walked (in miles).

The total time is 9:00 -6:50 = 2:10 = 2 1/6 hours = 13/6 hours.

The total time is the sum of times for the two parts of the trip: walking and riding.

  walking time = walking distance/walking speed

  = w/3

  riding time = riding distance/riding speed

  = (20-w)/30

The total time is that given above:

  w/3 +(20-w)/30 = 13/6

  10w +(20 -w) = 65 . . . . . . . . multiply by 30

  9w = 45 . . . . . . . . . . . . subtract 20, collect terms

  w = 5 . . . . . . . . . . . divide by 9

The girl walked 5 miles.

You might be interested in
A company makes spherical tanks that store chemicals. Their standard model has a diameter of 6 meters, but a customer needs a la
Deffense [45]

Answer:

The approximate diameter of the larger tank is 8.10 meters

Step-by-step explanation:

Here, we want to calculate the diameter of the larger tank

The volume of a sphere

V = 4/3 * π * r^3

Let us calculate the volume of the standard model

That will be;

Since diameter is 6 and r = d/2

r = 6/2 = 3 meters

V = 4/3 * π * 3^3 = 36 π m^3

Now, the volume of the larger tank is 2.5 times of this;

The volume of the larger tank is 2.5 * 36 π = 90 π m^3

So we can calculate the radius of this before we calculate its diameter

4/3 * π * r^3 = 90 π

4r^3/3 = 90

r^3 = 270/4

r^3 = 67.5

r = 3x√(67.5)

r = 4.07 m

Diameter here is 2 times this

= 4.07 * 2 = 8.14

6 0
3 years ago
Aisle 2 of a furniture store stocks 4-legged chairs, 4-legged tables, and 3-legged stools. If there are t tables, c chairs, and
ruslelena [56]

4tx+4cx+3sx=41

You say 4x4=16

+4x4            =16

+3x3                9

5 0
4 years ago
Masha bought red, green, and yellow balloons for a party. She bought 40 red balloons. The number of green balloons Masha bought
Vika [28.1K]

Answer:

bought is 3/5 of the number of red balloons. The number of green balloons is also 2/3 of the number of yellow balloons.

6 0
3 years ago
Read 2 more answers
The train from New York to Boston goes 100 miles every 80 minutes. If the distance from New York to Boston is 240 miles, how lon
denpristay [2]
The awnser is uhhhhhh chicken sandwihc
4 0
3 years ago
The name of the property illustrated in each statement
insens350 [35]
9. Commutative Law,  11. Multiplicative Identity Property, 13. Distributive Law, 15. Inverse Property of Addition, 17. Commutative Law, 19. Distributive property (?)
Good luck, hope this helps!!
5 0
4 years ago
Other questions:
  • What is the measure of segment eb ?
    5·1 answer
  • Which describes dependent events
    10·1 answer
  • What is the answer in fraction form of -2 2/5 + 3 1/4
    7·2 answers
  • Determine which ordered pair is not a solution of y=-5x-4 a. (10,-52) b.(7,-39)c.(-7,31) d(8,-44)
    12·1 answer
  • a rectangular football field has a width of (x+2) yd. the length of the field is 2x yd more than 2 times the width. Find the are
    7·1 answer
  • Which expression below does not give the area of this figure?
    10·1 answer
  • Service improves society, impacting the helpers as well as those needing assistance. It means being an active participant in one
    13·2 answers
  • I neeed help asap please
    6·2 answers
  • What is the range of the following relation?
    6·1 answer
  • A company that makes hair-care products had 9,000 people try new shampoo Of the 9,00 people, 27 had an mild allergic reaction wh
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!