This year 90 students signed up for the group talent contest if all the groups had the same number of students how many groups could be formed

A. 4 or 5
B 5 or 6
C 4 or 6
D 4 or 9

Answer

B) 5 or 6

Step-by-step explanation:

We can solve this by taking 90 and dividing it by 5 or 6

90/6 = 15

or

90/5 = 18

the answer MUST be a whole number. There cannot be .2 students (no decimals basically).

answer: the common difference is -0.10

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.