A: 80 ft^3
to make math easier, I'm translating the extra inches into a decimal so it's a solid number to represent feet. 9 inches is 0.750, and 1 inch is 0.0833 of a foot.
23.750 x 10.0833 = 239.478375, rounding up to 240 feet^2
multiply this by 0.333 to get the volume needed for the patio, 80 ft^3
(79.92 rounded up to the nearest whole)
B: $530
Multiply the volume of concrete needed by the price per cubic foot.
80 x 6 = $480, and since the volume is less then the limit to surpass the initial cost we add $50 to our total cost, making it $530
Answer: $12.50
Step-by-step explanation:
Sarah starts out with $100. She gave 3/4 of it away. 3/4 of 100 is 75. So, that means she gave $75 to her sister. she has $25 left but she gives half of the 25 to her friends. You would divide 25 by 2. since you have to split the 25 in half. she gave away $12.50 and she kept $12.50 for herself. So, she has $12.50 left after giving the money away.
Answer:
The difference between these cut-offs is of $1.9.
Step-by-step explanation:
In this question, we have to find the 90% confidence interval, using the t-distribution.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 41 - 1 = 40
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 40 degrees of freedom(y-axis) and a confidence level of
. So we have T = 1.684
The margin of error is:

In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 9.03 - 0.95 = $8.08.
The upper end of the interval is the sample mean added to M. So it is 9.03 + 0.95 = $9.98.
What will be the difference between the upper and lower spending cut-offs which define the middle 90% of the customers if the sample contains 41 customers
$9.98 - $8.08 = $1.9
The difference between these cut-offs is of $1.9.
Answer:
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Step-by-step explanation:
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Answer:
Vertical Angles
Step-by-step explanation:
each of the pairs of opposite angles made by two intersecting lines.