exam, which statement about the graph is true?
*a clearer picture containing the graph is shown in the attachment
Answer:
20% of the class earned a D
Step-by-step Explanation:
Step 1: Determine the total number of students represented on the graph:
9 students => D
5 students => C
14 students => B
17 students => A
Total number of students = 45
Step 2: Express each category of students who scored a particular grade as a fraction and as percentage.
9 students => D => => as percentage, we have
5 students => C => => as percentage, we have
14 students => B => => as percentage, we have
17 students => A => => as percentage, we have
Step 3: Check each statement to see if they are true or not based on the calculations above.
Statement 1: "⅕ of the students earned a C."
This is NOT TRUE From our calculation, ⅑ of the students earned a C.
Statement 2: "3% more students earned an A than a B." This is also NOT TRUE.
37.8% earned A, while 31.1% earned a B. Thus, about 6.7% more students earned an A than a B.
Statement 3: "20% of the class earned a D". This is TRUE.
Check calculation in step 2.
Statement 4: "¼ of the class earned a B". This is NOT TRUE.
¼ is 25% of the class. Those who earned a B account for 31.1% not 25% (¼ of the class).
The correct statement is: "20% of the class earned a D"
Answer:
4.5 inches
Step-by-step explanation:
8-3/4-3/4-3/4-3/4-3/4-3/4= 4 2/4
Answer:
The derivative of the function is 3.
Step-by-step explanation:
The derivative of is . The derivative of 20x is 20, for example. The derivative of is .
In this problem
It aks the derivative of a function, which is 3x. Applying the rule that is explained above, we have that the derivative of 3x is 3.
So the derivative of the function is 3.
Pentagon
Hexagon
Rectangle
Let the width = x feet, then the length = 160 - x feet.
The area = x * (160 - x) = 4000
160x - x^2 = 4000
x^2 - 160x + 4000 = 0
x = [- (-160) +/- sqrt (160^2 - 3 * 1 * 4000)] / 2
x = 128.98 or 31.01
answer is length = 129 feet and width = 31 feet ( to nearest foot).