The mean of a set of credit scores is 4-690 and

which statement must be true?

a. o z690 is within 1 standard deviation of the mean
b. 2690 is between 1 and 2 standard deviations of the mean.
c. z690 is between 2 and 3 standard deviations of the mean.
d. z690 is more than 3 standard deviations of the mean.

C.  z690 is between 2 and 3 standard deviations of the mean.

Step-by-step explanation:

idk

step-by-step explanation:

p ÷ r = tan(x)

step-by-step explanation:

given that there is a figure below shows a right triangle: a right triangle is shown with hypotenuse equal to q units and the length of the legs equal to p units and r units.

graph is missing so i will create the graph as per given information.

the angle between the legs having lengths p units and q units is y degrees. the angle between the legs having lengths r units and q units is x degrees.

now we need to find about what is p ÷ r equal to.

so we can use trigonometric ratio tan(x)=[altitude]/[base] to find the value of p ÷ r, because p is the altitude and r is the base.

p ÷ r=tan(x)

hence final answer is p ÷ r=tan(x).