The answer is 12c^8/d^2 or answer A
The standard error is 100% as females cannot be 90% of the population.
Congruent triangles have congruent sides and angles. If ΔKMN≅ΔPRT (given) then from the diagram you can conclude that
If MN≅RT, then
3x-1=20,
3x=20+1,
3x=21,
x=21:3,
x=7.
Answer: x=7.
Okay the first one is what u did lol
Answer:
Let there were total x people at the conference
so 32%of x is 216
32/100×x=216
x=216×100/32
x=675
So total people present at the conference were 675
