Answer:
Step-by-step explanation:
Given
<em>The attachment presents the table properly</em>
Solving (a): Percentage of those who play for less than 50 hours weekly
To do this, we simply consider the frequency of students that fall within:
1.0 - 7.9, 8.0 - 14.9,......,43.0 - 49.9
Their frequency is:
The percentage is then calculated as:
Solving (b): Percentage of those who play for 43 or more hours weekly
To do this, we simply consider the frequency of students that fall within:
43.0 - 49.9,......,64.0 - 70.9
Their frequency is:
The percentage is then calculated as:
Answer:
-3
Step-by-step explanation:
It would be: 255 - (255 * 22%)
= 255 - (255 * 0.22)
= 255 - 56.1
= 198.9
In short, Decrease in Price is $56.1 & Sale Price is $198.9
Hope this helps!
15 I think i'm sorry if i'm wrong
6^2/2(3)+4
Follow the order of operations, (GEMDAS) which goes like this:
<em>grouping, exponents, multiplication/divison, addition/subtraction
</em>
First up is our grouping, specifically parentheses. While we do have parentheses in our expression there isn't anything going on <em>inside</em> of them that we'd have to do first. (The 2(3) is another way of writing 2×3.)
Next we have exponents, which would be our 6^2. (6 squared)
When something is squared, that means it is multiplied by itself. 6^2 = 6×6 = 36.
Now our expression is 36/2(3)+4.
Next we need to handle the multiplication and division. (order doesn't matter)
The best way to do this is from left to right. The 36/2 = 18...
Then 18(3) = 54.
If we took 36(3) then divided by 2 we would get the same answer.
However, what you <em>cannot</em> do is multiply the 2(3), simply because the 2 is a denominator of a fraction. If you don't know what this is or why, it's okay--just always do it left to right and you'll never have to worry about it.
Now our expression is 54+4.
Finally, we can handle the addition/subtraction. 54+4 leaves us with 58.
