Answer:
120
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
<em>Answer:</em>
The Answer is 300
<h3><em>
Step-by-step explanation:</em></h3>
The answer is 300 because if you look at the hundreds place it is 200 and as my teacher told me, if the number to the right is 5 or greater bump the number up! Since the number is eight the eight will move the two up one digit causing it to be 3 and since that number was moved up all the other numbers become zeros.
So, your answer is 300 or 300.00
(P.S. if you need anymore help with rounding you can use this link and it will solve it for you)
https://www.calculatorsoup.com/calculators/math/roundingnumbers.php
Using the definitions of the mean and of the standard deviation of a data-set, we have that:
- The standard deviation would remain constant.
<h3>What are the mean and the standard deviation of a data-set?</h3>
- The mean of a data-set is given by the <u>sum of all values in the data-set, divided by the number of values</u>.
- The standard deviation of a data-set is given by the <u>square root of the sum of the differences squared between each observation and the mean, divided by the number of values</u>.
When the measure of 84 is added to the data-set, we have that:
- A measure greater than the mean is added, hence the mean would increase.
- The difference squared between 84 and the mean of 81 is of 9, which is the same as the standard deviation, which would remain constant.
More can be learned about the mean and the standard deviation of a data-set at brainly.com/question/26941429
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The area of triangle is equal to 1/2 multiplied by base and height. In this case, height is equal to b - 3 and area is equal to 19 b. thus the equation is
19 b = 0.5 (b-3 ) b b is then equal to 41 units. h is b - 3 equal to 38 units.
