Step-by-step explanation:
i answered these 3 already.
The mean of the students scores is 81.3, the median is 80.
If Ms.Mosher adds 5 bonus points to each student, the mean and median will both increase by 5 of the six student’s scores!
3x -3y = 6
or, 3(x -y)= 6
or, x-y =6/3
or, x-y = 2
or, x=2+y........eqn(i)
4x - 7y = 2
substituting the value of x from eqn(i)
or, 4(2+y) -7y = 2
or, 8 + 4y -7y = 2
or, -3y = 2-8
or, y = -6/-3
■ y=2
so in eqn(i)
x= 2+y
x= 2+2
■x = 4
They both equal 1/x.
Start by breaking the radicand up into a product of known factors.
2-33+(-4)+5-(-6)-70=
2-33-4+5+6-70=
-35+5+6-70=
-30+6-70=
-24-70=
-94
Answer=-94
