Joanna bought a gallon container of milk at the store what is the volume of the container in cups
2 answers:
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Solution:
Given;
Thus, the yearly interest rate on Bianca's account is 2.4%
Answer:
She has enough with cups left over.
Step-by-step explanation:
For this equation, it's probably easiest to use improper fractions.
At the start, she has 4 cups, or
, which can be converted to
(which is useful for the next part) by multiplying the numerator and denominator by 2.
When she uses 2 cups, which can be converted to
. When subtracting this from the original, you get
-
=
.
She borrows another cup, or of a cup, which gets added on to the previous result, giving
+
=
.
The recipe calls for 2 cups, which can be converted to
or
.
-
=
, meaning she has
cups left over.
** solving this mainly uses conversion to improper fractions and adding/subtracting fractions, which may be skills you would like to practice. I'm always happy to help!
Answer:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8
Step-by-step explanation:
Information provided
represent the sample mean
population mean
s=2.4 represent the sample standard deviation
n=83 represent the sample size
Confidence interval
The confidence interval for the population variance is given by the following formula:
The degrees of freedom are given by:
The Confidence is given by 0.90 or 90%, the value of and
, the critical values for this case are:
And replacing into the formula for the interval we got:
Now we just take square root on both sides of the interval and we got:
And the best option would be:
A. 2.2 < σ < 2.8