6. In order to take a sample of 90 members of a local gym, I first divide the 2 points members into men and women, and then take a simple random sample of
45 men and a separate simple random sample of 45 women. This is an
example of a *
block design.
stratified random sample.
randomized comparative experiment.
double-blind simple random sample
a simple random sample.

i wish i could you, i have no idea how to answer this

step-by-step explanation:

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.  

i don’t see a picture

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !