This year, 75% of the graduating class of harriet tubman high school had taken at least 8 math courses. of the remaining class members, 60% had taken 6 or 7 math courses. what percent of the graduating class had taken fewer than 6 math courses? a. 0% b. 10% c. 15% d. 30% e. 45%

B. 10%

Step-by-step explanation:

Let X denote the random variable "Number of courses taking by one student in the Harriet Tubman High School"

For this case we have that information given:

75% of the graduating class of Harriet Tubman High School had taken at least 8 math courses

And that means 25% of the total are taking 7 or less courses

And by the complement rule we can find

And then we can find the probability required like this:

Let E the event:

E=" A student had taken fewer than 6 math courses"

B. 10%

two data sets with the same median will not have the same varaibility

step-by-step explanation:

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.