Answer:
Please help im on that 2dd
Step-by-step explanation:
dddd
Answer:
x = 36.87
Step-by-step explanation:
Find the length of the missing side.
x^2 + 12^2 = 15^2
x^2 + 144 = 225
x^2 = 81
x = 9
Now use the law of sines:
sin(90)/15 = sin(x)/9
Multiply each side by 9
9 * sin(90)/15 = sin(x)
0.6 = sinx
sin^-1 = 36.86989 rounded to 36.87
You said it. Mary is 16 years old.
Answer:
IRA
Step-by-step explanation:
I looked it up
Answer:
Step-by-step explanation:
This fraction represents the area under the standard normal curve between 60 and 65 points. This represents the area from the mean (60) to one standard deviation above the mean (65). The applicable z-score is
65 - 60
z = --------------- = 1.
5
The problem then involves finding the area under the curve from z = 0 (that is, the mean) to z = 1 (one standard deviation above the mean).
Refer to the "empirical rule." This rule states that 68% of data lies within one standard deviation of the mean, that is, within z = -1 and z = 1. We are interested only in the area that is within z = 0 and z = 1, which is half of 68%, and thus is 34%.
In summary, approx. 34% of students have scored between 60 and 65 points.
