Given
Mean = 6.625
Standard Deviation = 1.9
Values within 1 standard deviation of mean, mean:
[tex]\begin{gathered} 6.625-1.9<em>We look at the number of values at 5, 6, 7, and 8.</em>
<em />
<em>5 = 2 people</em>
<em>6 = 2 people</em>
<em>7 = 5 people</em>
<em>8 = 3 people</em>
<em />
Total = 2 + 2 + 5 + 3 = 12 people
<h2>Answer</h2>
C
Step-by-step explanation:
The area of triangle =
4*3/2=6
The area of Rectangle=
7*4=28
The total =
28+6=34
Step-by-step explanation:
Given that,
The area of a blackboard is 
The area of poster is 
We need to find the unit rate of the blackboard's area to the poster's area. So, it can be calcualted by dividing blackboard's area to the poster's area.
So,
So, the rate of 
.
In order to make a fraction a ratio, you must simplify it if it is needed. So for 12/9, you can divide 3 from the numerator and denominator. That would equal 4/3. Now that it is simplified, you can make it into a ratio. (can be using ":" or using the word "to")
One way it can be used is --> 4:3
Another way --> 4 to 3
Good luck!
