
<span>the missing exponent is
-3</span>
(x + 7)(x - 4) = x^2 - 4x + 7x - 28 = x^2 + 3x - 28
Answer:
2x-7
Step-by-step explanation:
Answer:

Step-by-step explanation:
The spinner is independent (the total won't be effected)
we know there is 2 whites with 8 coloured option.

we want the probability of getting two whites.

there is 3 ways to work out probability, fraction, decimal and percentage (i'd personally say fraction is the most easiest)
Answer:
The upper confidence limit of a 92% confidence interval for the population mean of grade point average is 2.93.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find the margin of error M as such

In which
is the standard deviation of the population and n is the size of the sample.

The upper end of the interval is the sample mean added to M. So it is 2.89 + 0.04 = 2.93.
The upper confidence limit of a 92% confidence interval for the population mean of grade point average is 2.93.