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PSYCHO15rus [73]
3 years ago
6

A diver shines a flashlight upward from beneath the water at an angle of 46.5 degrees to the vertical.

Mathematics
1 answer:
My name is Ann [436]3 years ago
7 0
<span><span>θi</span>=<span>sin<span>−1</span></span>(μsin<span>θr</span>)
   =<span>sin<span>−1</span></span>(1.33×sin46.5)
   =74.7degrees</span>
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There are 9 boys and 11 girls in a math class. Which ratios compare the number of girls to the number of
igor_vitrenko [27]
9:11, 9/11 are the only ones because girls are first
4 0
3 years ago
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you are making curtains by alternating strips of solid colored fabric and patterned fabric. the solid colored fabric costs 99¢ p
weeeeeb [17]
Hello, 

to find the total cost (c) of the colored strips we have to multiply the number of strips (n) by the cost of each color strip (99¢), that as an algebraic function is:

\boxed{c= n*99} [¢]

Now, if we use 3 solid color strips, that means that we use 4 patterned strips, so:

Cost=3*0.99+4*1.25 \\ \boxed{Cost= 7.97}

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4 0
3 years ago
Jason is the captain of his basketball team the list below shows how many points Jason scored in each of the first 10 games 18,2
Anika [276]
A. The scores in order are: 10, 12, 13, 14, 14, 16, 18, 23, 24, 26. The range is 26 - 10 = 16. The mean is the sum divided by 10, which is 17. The median is between 14 & 16, which is 15. The mode is 14, since it is repeated twice.
B. The variance is calculated by subtracting each score from the mean, squaring, and adding all such squares. Then divide by the number of terms (10) to get 27.6 Take the square root to get the standard deviation, which is 5.25.
C. This is for a population, since these are all 10 games that Jason played. (If it were a sample, we would divide by 9 only)

D. The mean of 17 is higher than the median of 15 and the mode of 14. This implies a left-skewed distribution. However, the SD of 5.25 is quite high relative to the mean of 17, so the distribution is not that clearly defined yet (more data points would make it clearer).
4 0
3 years ago
Not too sure about this one
elena-s [515]

Answer:

see explanation

Step-by-step explanation:

let y = f(x), then

y = 11x - 1

Interchange x and y and solve for y

x = 11y - 1 ( add 1 to both sides )

x + 1 = 11y ( divide both sides by 11 )

y = \frac{x+1}{11}, hence

f^{-1}(x) = \frac{x+1}{11}

3 0
4 years ago
Find the equation 3x-1=11
g100num [7]

Answer:

x = 4

Step-by-step explanation:

3x - 1 = 11

3x = 1 + 11

3x = 12

x = 12/3

x = 4

Thus, The value of x is 4

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