The residual is -1.5 so the answer is a
The expected value is 8.5 when you plug 4 into the equation
Residual=observed-expected=7-8.5=-1.5
I thinks it’s 3 because 21-12=9 so you spent 9 dollars 9/3=3
A negative plus a negative equals a negative.
A negative plus a positive depends on which number is bigger for the sign.
A negative times a negative equals a positive.
A negative times a positive equals a negative.
A negative divided by a negative equals a positive.
A negative divided by a positive equals a negative.
A negative minus a negative depends on which number is bigger for the sign.
A negative minus a positive equals a negative.
Answer:
the answer to this is four cm