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
Dahasolnce [82]
3 years ago
11

Is it faster to drive a car going 40 miles per hour or 50 feet per second?

Mathematics
2 answers:
Mrrafil [7]3 years ago
7 0

Answer:

Yes

Step-by-step explanation:

To solve this problem, let's convert these into the same units.

We use the conversions:

- 1 hour = 60 min

- 1 min = 60 sec

- 1 mile = 5280 ft

40 miles/hour = 40 miles/60 minutes = \frac{40}{60} miles/min = \frac{40}{60} miles/60 seconds =

\frac{\frac{40}{60} }{60} miles/sec = \frac{\frac{40}{60} }{60}*5280 ft/sec = 176/3 ft/sec ≈ 58.67 ft/sec

Obviously, 58.67 ft/sec > 50 ft/sec.

Thus, yes, it is faster to drive a car going 40 mph than a car going 50 ft/sec.

Hope this helps!

dalvyx [7]3 years ago
5 0

Answer:

40 miles per hour is faster.

Step-by-step explanation:

First we have to find how many feet per hour the second car is going.

There are 60 seconds in a minute, and 60 minutes in an hour.

50*60=3600

There are 3600 seconds in a hour.

50*3600=180000

This means that the second car going 180000 feet per hour.

1 mile is 5280 feet.

Now we have to figure out how many miles 180000 is.

We can do that by setting up the following expression.

180000/5280=34 1/11 or 34.09

Since 40 is greater than 34.09, it is faster to drive a car going 40 miles per hour.

You might be interested in
Explain how to perform a​ two-sample z-test for the difference between two population means using independent samples with known
iren2701 [21]

Answer:

The steps 1-7 have been explained

Step-by-step explanation:

The steps are;

1) We will verify that the population standard deviations are known and that the population is normally distributed which means the sample size must be a minimum of 30.

2) We will state the null and alternative hypothesis

3) We will determine the critical values from the relevant tables

4) From the critical values gotten, we will determine it's corresponding region where it can be rejected.

5)We will calculate the value of the test statistic from the formula;

z = [(x1' - x2') - (μ1 - μ2)]/√[((σ1)²/n1) + ((σ2)²/n2)]

6) If the value of the test statistic gotten from step 5 above falls in the region of rejection noted in step 4,then we will reject the null hypothesis

7) After rejection of the null hypothesis, we will now give a decision/conclusion on the claim.

5 0
2 years ago
The position of an object along a vertical line is given by s(t) = −t3 + 3t2 + 7t + 4, where s is measured in feet and t is meas
saw5 [17]

Answer:

The maximum velocity of the object in the time interval [0, 4] is 10 ft/s.

Step-by-step explanation:

Given : The position of an object along a vertical line is given by s(t) = -t^3+3t^2+7t +4, where s is measured in feet and t is measured in seconds.

To find : What is the maximum velocity of the object in the time interval [0, 4]?

Solution :

The velocity is rate of change of distance w.r.t time.

Distance in terms of t is given by,

s(t) = -t^3+3t^2+7t +4

Derivate w.r.t. time,

v(t)=s'(t) = -3t^2+6t+7

It is a quadratic function so its maximum is at vertex of the function.

The x point of the function is given by,

x=-\frac{b}{2a}

Where, a=-3, b=6 and c=7

t=-\frac{6}{2(-3)}

t=-\frac{6}{-6}

t=1

As 1 lie between interval [0,4]

Substitute t=1 in the function,

v(t)= -3(1)^2+6(1)+7

v(t)= -3+6+7

v(1)=10

Th maximum velocity is 10 ft/s.

Therefore, the maximum velocity of the object in the time interval [0, 4] is 10 ft/s.

8 0
3 years ago
Read 2 more answers
What is b’c the length of bc after dilation? What is the measure of
Anastasy [175]

Answer:

C

Step-by-step explanation:

the angle will always stay the same, it won't change

but if the dialation is 1/2, then that means that the sides will decrease in size compared to the original length,

(just divide by 2) on each side length to get the answer

4 0
3 years ago
-0.3535 is it rational or irrational​
creativ13 [48]

Answer:

Rational

Step-by-step explanation:

A rational number is a number expressed as a fraction. So the number could be a decimal or percent.

Hope This Helps :)

7 0
3 years ago
Read 2 more answers
A diver starts at the surface of the water and travels 8 feet to the bottom.
Sauron [17]

Answer:

On the graph B, at 0 seconds the graph will be <u>at y=0.</u>

The graph will be <u>going down</u> until 2 seconds, when the diver reaches her deepest point. At 2 seconds the height of the graph will be -8ft.

Step-by-step explanation:

In graph B we are measuring the distance from the surface, that is we are setting the surface to be y=0. Thus if the diver reaches her deepest point 8ft down, she will be below y=0 and at -8ft.

Thus, in shape the graph B will be similar to graph A, but it will be shifted downed by 8ft.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Find the unknown side length. Round to the nearest tenth a=5 b=? C=25
    9·1 answer
  • PLEASE HELP ILL GIVE YOU A BRAINLIEST!!
    15·1 answer
  • Customer A with a Bronze service level package calls in a Critical System Failure at 9:00 AM. Customer B with a Silver service l
    5·2 answers
  • write the converse of the conditional statement "if a parallelogram has one right angle, then it is a rectangle
    12·2 answers
  • Plz help me please please please help me I need your help on begging you please I need your help plz help me
    14·1 answer
  • Explain how to use a pattern to find the product of a power of 10 and a decimal
    8·1 answer
  • What is the y-value of the solution of the system of equations below?
    8·1 answer
  • 4. Solve for x in each diagram.<br> a.<br> X°<br> 108°<br> 156°
    9·1 answer
  • 3. You owe $1,350.00 on a credit card with a 14.25% APR. You pay $300.00 at the beginning of
    10·1 answer
  • PLEASE HELP! MATHS ​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!