Try doing A, 2/3 Hopefully it helps you, I'm not good with fractions.
we are given

we can use factoring formula

we can compare
and we get


now, we can solve for m and n
and we get

now, we can use formula
and we get

now, we can set it equal to 0





so, we will get
.............Answer
Answer: 9
Step-by-step explanation:
first u have to add up all the numbers "12 + 2 + 9 + 12 + 10" and that's 45 then u have to divide by how many numbers there are, so there's 5 numbers. ur dividing "45/5" which is 9 so the mean is 9
mark as brainly plss
Answer: Don't know sorry
Step-by-step explanation:
Answer:
AB = DC So ∠A and ∠D are bigger then 90%