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
Sergio039 [100]
3 years ago
7

John travels 39 miles moving 26 miles per hour.How long will it take for his trip? HELPP!!!!

Mathematics
1 answer:
loris [4]3 years ago
7 0
t=\frac{d}{v}
t - time, d - distance, v - speed

d=39 \ mi \\
v=26 \ \frac{mi}{h} \\ \\
t=\frac{39}{26}=\frac{3 \times 13}{2 \times 13}=\frac{3}{2}=1.5 \ [h]

It will take 1.5 h.
You might be interested in
Soap films and bubbles are colorful because the interference conditions depend on the angle of illumination (which we aren't cov
mylen [45]

Answer:

56.39 nm

Step-by-step explanation:

In order to have constructive interference total optical path difference should be an integral number of wavelengths (crest and crest should be interfered). Therefore the constructive interference condition for soap film can be written as,

2t=(m+\frac{1}{2} ).\frac{\lambda}{n}

where λ is the wavelength of light and n is the refractive index of soap film, t is the thickness of the film, and m=0,1,2 ...

Please note that here we include an additional 1/2λ phase shift due to reflection from air-soap interface, because refractive index of latter is higher.

In order to have its longest constructive reflection at the red end (700 nm)

t_1=(m+\frac{1}{2} ).\frac{\lambda}{2.n}\\ \\ t_1=\frac{1}{2} .\frac{700}{(2)*(1.33)}\\ \\ t_1=131.58\ nm

Here we take m=0.

Similarly for the constructive reflection at the blue end (400 nm)

t_2=(m+\frac{1}{2} ).\frac{\lambda}{2.n}\\ \\ t_2=\frac{1}{2} .\frac{400}{(2)*(1.33)}\\ \\ t_2=75.19\ nm

Hence the thickness difference should be

t_1-t_2=131.58-75.19=56.39 \ nm

7 0
3 years ago
Sunday morning, the temperature in Bayfield, Wisconsin was -15.6 degrees Fahrenheit. If the temperature rose 3.8 degrees Fahrenh
Ostrovityanka [42]

Answer:

just add them and leave it as a positive

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please no links I just need help with this
PIT_PIT [208]
C i think i hope its right
3 0
3 years ago
Which type of parent function is f(x) = x2? O A. Square root O B. Linear O C. Cube root O D. Quadratic​
salantis [7]

Answer: D. quadratic

Step-by-step explanation:

7 0
3 years ago
N^2- 5n +4=0 quadratic equation
luda_lava [24]

Answer:

n = 1, 4

Step-by-step explanation:

Step 1: Write equation

n² - 5n + 4 = 0

Step 2: Solve for <em>n</em>

<u>Factor:</u> (n - 4)(n - 1) = 0

<u>Find roots:</u> n = 1, 4

Step 3: Check

<em>Plug in n to verify if it's a solution.</em>

1² - 5(1) + 4 = 0

1 - 5 + 4 = 0

-4 + 4 = 0

0 = 0

4² - 5(4) + 4 = 0

16 - 20 + 4 = 0

-4 + 4 = 0

0 = 0

7 0
3 years ago
Read 2 more answers
Other questions:
  • spencer took 21$ with him to the mall. At the music store, he spent 2/3 of his money on a DVD, he spent 1/4 of what he had left
    6·1 answer
  • The quotient of y and 5 is equal to 27
    7·1 answer
  • Please help me with these questions
    9·1 answer
  • 3(x−0.2)=1.8+x find x
    13·1 answer
  • What is the center of the circle for this equation:<br> (x + 3)² + (y - 2)² = 25
    15·1 answer
  • Please please try to help me with most of my last 5 questions. If not, then at least 1 of them.
    13·1 answer
  • Kerry has a collection of 1,100 baseball cards. Of these baseball cards, 40% are dated before 1970, 25% are dated from 1970 to 2
    7·1 answer
  • Help plsssss:(
    15·1 answer
  • Last night Danielle had a birthday party, of the birthday cake was left over. She wanted to share the left over
    6·1 answer
  • Vindows. Find the total surface area<br> 4 ft<br> 5 ft<br> 5 ft<br> 4 ft<br> 7 ft<br> oft -
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!