25% of whom were first year teachers out of 72 teachers in attendance in a school staff meeting equals 18 first-year teachers in the meeting. Therefore, there are 18 first-year teachers in the school staff meeting.
A ratio is a comparison of two values. In this case, there are 6 boys to every 15 girls. So, this means the ratio is 6:15.
Hopefully, this helps!
Triangular pyramid has its base as a triangle, and a Rectangular pyramid has its base as a rectangle.
Answer:
I think this is what you want:
2(6)-2x=3
We then see that 2(6) and 2(x) have two in common as a "coefficient" you could say, so we distribute and put parentheses around it.
2(6-x)=3
6-x=3/2
-x=-9/2
x=9/2
