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
Sedbober [7]
3 years ago
15

A biker rode 45 miles in 180 minutes. At what speed (in miles per hour) was the biker travelling? A. 4 B. 17 C. 9 D. 12

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

v = 15 miles / hour

Step-by-step explanation:

Given:

Distance covered by biker = s=45 miles

time taken by him = t=180 minutes

TO Find:

speed in miles per hour = v = ?

Solution:

As it is given that the distance covered is 45 miles

and time taken by him is 180 minutes

as one hour have 60 minutes

so time taken by rider = t = 180 /60

                                          = 3 hours

this step is done because we have to find speed in miles per hour

Now

The formula for finding the distance is

distance = speed * time

or

s = v * t

we have to find v

so dividing both sides by t

\frac{s}{t} = \frac{v*t}{t}

it becomes

v = \frac{s}{t}

Putting the values

v = \frac{45}{3}

solving it gives

v = 15 miles / hour

which is the required speed

in the given options it is not available


You might be interested in
It takes 15 hours for 4 men to paint a room.
kolezko [41]

Answer:

6

Step-by-step explanation:

If there was one man, he would have taken 15×4= 60 hours

To complete the job in 10 hours, 60÷10 = 6 men will be needed

6 0
3 years ago
Solve the literal equation for the indicated variable. P= 2(l+w) for w
Lorico [155]

Answer:

P=2(l+w)

divide the both sides by 2

P/2 = l +w

make w the subject of the formula

P/2 - l =w

w = P/2 - l

8 0
2 years ago
A cylinder has a volume of 140 x cubic meters and a height of 14 meters. What is the area of the base?
AleksandrR [38]

Answer: I think it's a

Step-by-step explanation:

6 0
3 years ago
Line l is perpendicular to line m with equation 2x + 5y = 20. line l intersects line m at (-5,6).
VladimirAG [237]

Answer:

The equation is y = -2/5x + 4

Step-by-step explanation:

First we have to find the slope of the line. In order to do so, solve the first equation for y.

2x + 5y = 20

5y = -2x + 20

y = -2/5x + 4

This gives us a slope of -2/5. Given that information, we now can plug the slope and point into point-slope form and get the final equation.

y - y1 = m(x - x1)

y - 6 = -2/5(x - -5)

y - 6 = -2/5(x + 5)

y - 6 = -2/5x - 2

y = -2/5x + 4

7 0
3 years ago
What is the factored form of 8x^2+18x+9?
forsale [732]
Factored form is (4x+3)(2x+3)
5 0
3 years ago
Other questions:
  • Solve the equation for 0° ≤ x ≤ 90°. Round to the nearest degree. 8cotθ + 3 = 5
    15·1 answer
  • If 2 x to the third power is equal to 54, what is two times X to the third power equal to?
    6·1 answer
  • The area of the right triangle shown is 24 square feet. Which equations can be used to find the lengths of the legs of the trian
    9·2 answers
  • The Atlanta news media recently published that " we found a high correlation (r = 1.25) between number of days that students wer
    11·1 answer
  • Will give brainliest!
    5·2 answers
  • Need took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional 10 points
    15·1 answer
  • Find Is number 9 correct?
    5·1 answer
  • MAX is equiangular If m
    6·1 answer
  • If S_1=1,S_2=8 and S_n=S_n-1+2S_n-2 whenever n≥2. Show that S_n=3⋅2n−1+2(−1)n for all n≥1.
    11·1 answer
  • +3=17
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!