Answer:
-3>x
Step-by-step explanation:
Answer:
Sample size is
Step-by-step explanation:
Given that,
Margin of error %
Confidence level %
Suppose, sample proportion
i.e.
We know that,
Margin of error
∴
squaring on both side,
∴
Hence, the sample size is,
Hence, the correct option is
You need to set up proportions:
3/8=x/192
(3 cups to 8 ounces = x cups to 192 ounces)
cross multiply:
8x=3×192
8x=576
x=72
72 cups are needed
Answer:
Isosceles trapezoid
Step-by-step explanation:
Plotting the points show us that this shape is at least a trapezoid, by the fact that only one pair of parallel sides.
To show that it is isosceles is done by finding the lengths of the diagonals, which takes quite long, but here, it is very clear that the two non-parallel sides are congruent, and the parallelogram is perfectly symmetrical.
He makes it up by 1/3=.333%=$75*1.333=$99.98
he then discounts it by 20%=1/5=99.98/5=$19.99
If the original profit is $99.98-$75=$24.98
and then discounted by $19.99
it would be $24.98-$19.99
=
$4.99