From all those aforementioned, the true statement is: Thanh’s grade is 2.5 standard deviations below the mean of the test grades.
I'm not sure if that's the correct method of finding that (it could be, I was just never shown that kind of method). What I did was multiply everything out, that way you have two numbers vs two equations. Then add those two numbers and turn that into scientific notation.
The answer is x=9 because if you do 3x+-2 that gives you 1 and 1 divided by 9 is 9 and you get that by getting rid of your 6 first and adding it to the 3 from 3(x+1)
Answer:
see below
Step-by-step explanation:
m+6/3 = -8
Simplify the fraction
m+2 = -8
Subtract 2
m+2-2 = -8-2
m = -10
or
(m+6)/3 = -8
Multiply each side by 3
m+6 = -8*3
m+6 = -24
Subtract 6
m+6-6 = -24-6
m = -30
The correct answer would be B because 88 divided by 11 would be 8 and therfore it would justift that the ration would be equal to 88:33
