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
nydimaria [60]
3 years ago
14

Shelly biked 21 miles in 4 hours. What is Shelly's average speed in miles per hour? At that same rate how many hours will it tak

e Shelly to bike 42 miles?
Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
7 0

Answer:

5.25 mph , for 42 mile she would ride around  8 hours

Step-by-step explanation:

you need to divide the 21 miles by the 4 hours to find how many miles Shelly rode for one hour and that will be your answer ( 5.25 mph)

Vedmedyk [2.9K]3 years ago
5 0

So, we need to do the distance she travelled (21 miles) divided by the rate at which she travelled (4 hours). Therefore, because 21 divided by 4 is 5.25, she biked at a speed of 5.25 mph (Miles per hour). So, if she bikes 5.25 miles every hour we can divide 42 by 5.25 to get the time it would take her to travel 42 miles. Now, 42 divided by 5.25 equals 8, so that means for Shelly to bike 42 miles at her average speed of 5.25 mph, it would take her 8 hours.

You might be interested in
The number of parking spots, y, in the local town x years from now can be modeled by the equation below. How
slavikrds [6]
6000. Hope this helps give brainliest
3 0
2 years ago
Grant spent 2.50,$4.00,$4.25, and $3.25?On breakfast one week.The next week he spent $6 more in total for the 4 breakfasts than
masha68 [24]

We have been given that Grant spent $2.50, $4.00, $4.25, and $3.25 on breakfast in one week. The next week he spent $6 more in total for the 4 breakfasts than the week before. We are asked to find increase in the mean of second week.  

Since Grant spent $6 more than last week, we will divide 6 by 4 to get how much mean of second week breakfast expenditures increased with respect to first week expenditures.

\text{Mean increase in second week breakfast expenditure}=\frac{6}{4}

\text{Mean increase in second week breakfast expenditure}=1.5

Therefore, mean of second week breakfast expenditure will be $1.5 more than first week.

3 0
3 years ago
Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?
NemiM [27]

Answer:

x squared over 4 plus y squared over 8 equals 1

Step-by-step explanation:

The general equation of ellipse is given as;

(x²/a²) + (y²/b²) = 1

The coordinates of a foci are: (±c, 0) where;

c² = b² - a²

However, we know that equation of directrix is; x = ±a/e

Now, Directrix is given ±4

Thus, a/e = 4

a = 4e

We also know that c = ae from ellipse foci coordinates.

Thus, ae = 2

since ae = 2, then (4e)e = 2

4e² = 2

e² = 2/4

e = 1/2

Thus;

a = 4 × 1/2

a = 2

Since c² = b² - a²;

2² = b² - 2²

4 = b² - 4

b² = 8

From (x²/a²) + (y²/b²) = 1, we can put our values to get;

x²/4 + y²/8 = 1

6 0
2 years ago
R is between q and s. if rs=47 and qs =83.8 find qr
ankoles [38]
Drip or drown drip or drown drip or drown
3 0
3 years ago
Which value is closest to the unit length of MN in the coordinate plane below?
sergey [27]

Answer:

D

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • How do you divide 3.4÷12.92
    15·2 answers
  • Helaine graphed the equation 12x - 4y = 3. What was the slope of Helaine's line?
    10·2 answers
  • Can someone help me plz?
    14·1 answer
  • What is 107,609 decided by 72
    9·2 answers
  • Suppose you are standing such that a 36-foot tree is directly between you and the sun. If you are standing 50 feet away from the
    5·1 answer
  • Felicia bought a jackhammer priced at $8.48. The total price, including sales tax, was $9.73. What was the sales tax percentage?
    7·1 answer
  • Denis is looking to buy a new car. He can take a loan out for $10,500 with an interest rate of 5% for 4 years. How much would hi
    8·2 answers
  • Simplify 5√3 + 2√27 plzzz​
    6·2 answers
  • Which expression is equivalent to 1/3 (6m+15) +3
    6·2 answers
  • A 100 rupee note was changed to 10 and 5 rupee notes, 15 notes in all. How many of each notes?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!