08/15/19

In snell´s law, find θ2 in n1sinθ1=n2sinθ2

Step by step please. I dont seem to understand it
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08/14/19

The Disk or Shell Method Calculus
Consider the region bounded by the x-axis and the function f(x)=-x2 +3x -2. Revolve the region about the y-axis and find the volume.
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08/13/19

Find the equation of the line: with x-intercept 5 and y- intercept -7
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08/12/19

A researcher observes a vehicle with an initial velocity of 14 m/s. The vehicle accerlerates uniformly with an accerleration of 3 m/s². After 6 seconds, what is the velocity of the vehicle?
Physical Science
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07/30/19

When does an atom produce a continuous emission? And when does it produce a line emission?
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07/25/19

Solve the systems of equations with the addition method:x+2y=10 ; x-2y=2.
The systems of equations are x+2y=10 x-2y=2
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07/20/19

Statistic question help

The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 309 days or longer. b. If the length... more
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07/15/19

How does the linear density (µ) of the string affect the propagation speed (v) of a wave on a taut string?
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07/15/19

Statistics question

For a population with a standard deviation of σ = 4, what is the z-score corresponding to a score that is 6 points below the mean?
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07/10/19

Answer for traveling cars
Car A leaves at 8:00 a.m. at 40 mph. Car B leaves 2 hours later at 60 mph. How long does it take Car B to catch up to Car A?
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07/10/19

The scores are adjusted so that the mean score is about mu =75 and the standard deviation sigma =5. What percent of the scores fall between 65 and 75?
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07/09/19

What is energy of photon yellow with frequency of 5.11x10 ^14
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06/23/19

The Standard Normal Distribution
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.... more
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06/19/19

How can I find the general solution of (2x^2+5xy^2) dx+ (5xy^2-2y^4) dy=0?
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06/04/19

The number 260 is seperated into two parts so that the first part is eight more than three times the second part. What are the two numbers?
FIRST PART:SECOND PART:
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06/03/19

Michele is rolling two six- sided dice, numbered one through six. What is the probability that the sum of her rolls is 6?
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05/30/19

Line M passes through points (4,2) and (-7,1). What is the slope of a line N that is parallel to line M?
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05/30/19

Rick kicks a soccer ball. It travels a horizontal distance of 30 ft and reaches a maximum height of 8ft. Write a quadratic equation to model the path of Rick's soccer ball.
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05/19/19

Sample Variance Question
Hi, I am reading a book for a hobby that has a math calculation I don't understand. I haven't been in school in 10 years.The book reads: Now record the variation from the average of the seven... more
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05/18/19

What is the 95 % conference interval for the average distance traveled to work by all employees?
A study of 13 employees found that the average distance they traveled to work was 14.3 miles. The standard deviation of the sample was 2 miles.
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05/18/19

What is the conference interval.
A sample of 300 high school seniors found that 195 of them took the SAT more than once. Find the 99% confidence interval for the proportion of all high school seniors who took the SAT more than once. more
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05/11/19

Are there any situations in which L'Hopital's Rule WILL NOT work?
Today was my first day learning L'Hopital's Rule, and I was wondering if there are any situations in which you cannot use this rule, with the exception of when a limit is determinable.
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05/06/19

The area between z=0.72 and z=1.24
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05/01/19

Light with a wavelength of 665 nm is passed through a diffraction grating with 759 slits/cm. Find the angle at which one would observe the first order maximum.
Light with a wavelength of 665 nm is passed through a diffraction grating with 759 slits/cm. Find the angle at which one would observe the first order maximum.
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04/26/19

Let f(x)=2x^1-6x^5. Then the anti-derivative F(x) such that F(0)=16 is

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