1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ierofanga [76]
3 years ago
9

Final grades are often computed using weighted averages. For example, Fran's teacher uses the following: homework 10%, quizzes 2

0%, and tests 70%.
Fran has an average homework score of 92. Her quiz score average is 68, and her test score average is 81. What final grade can Fran expect?
A) 73.5
B) 75.5
C) 78
D) 79.5
Mathematics
2 answers:
Kitty [74]3 years ago
6 0
To do this question, we need to multiply each of Fran's given grades by the corresponding percentage, and then add them all together.

We'll start with Fran's homework grade of 92. This grade is 10% of her final grade, so what we can do is turn the percentage into a decimal and then multiply it by her homework grade. To change a percentage into a decimal, we just need to divide the percentage by 100, which in this case would give us .1. Now we just have to do 92*.1 to get 9.2 as our first component.

Next, we'll do Fran's quiz grades. Her quiz score average is a 68, and it holds a weight of 20%. We have to change the percentage to a decimal again and then multiply it by her grade. 20% turns into .2, and .2*68 gives us a 13.6 as our second component.

Now all that's left is Fran's test grades. Her test average is an 81, and it holds a weight of 70%. Once again, we have to change the percentage to a decimal and multiply it by her grade. 70% turns into .7 and .7*81 gives us 56.7 as the final component of Fran's grades.

Finally, we just have to add all of the components together. 9.2 + 13.6 + 56.7 = 79.5, which is Fran's final grade, meaning that D) 79.5 should be your answer!<span />
qwelly [4]3 years ago
3 0
92 x 0.1 + 68 x 0.2 + 81 x 0.7
= 9.2 + 13.6 + 56.7
= 79.5%
You might be interested in
A lighthouse operator sights a sailboat at an angle of depression of 12°. If the sailboat is 80 m away, how tall is the lighthou
Brilliant_brown [7]

Answer:

‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎ ‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎

5 0
3 years ago
A scale drawing of a rectangular park measures 7.5 inches long and 4 inches wide. if the scale used for the drawing is 2.5 inche
klasskru [66]

Answer:

45 yards by 24 yards

Step-by-step explanation:

You would have to first find out how many 2.5 increments are in each of the two lengths. Then multiply that number by 15

6 0
3 years ago
A satellite moves at a speed of 27,950 kilometers per hour. About how much faster is one satellite than the other? Explain how t
Marianna [84]
27,950 k * X Kilometers
_____________________________ All you have to do now is cross multiply
1 hr 1hr
6 0
4 years ago
Brianna went on a trip to the art museum and sketched a scale drawing of a rectangular wall mural. She used a scale factor of 0.
Illusion [34]

i need more info cmon man

Step-by-step explanation:

ur  mom

6 0
2 years ago
Eliot is simplifying a radical. His work is shown.
nevsk [136]

Answer:

Answer is C.

The work shown above is correct; however, 2√16 maybe simplified further.


because √16 = 4

so  2√16 = 2 * 4 = 8


5 0
3 years ago
Other questions:
  • A teacher takes a random sample of 100 students enrolled at Springfield High School and asks them their opinions about the food
    15·1 answer
  • What is 5the answer 5t=t/45
    14·1 answer
  • What is the value of "x" for each equation? Also, please provide your process in how you solved this.
    15·1 answer
  • What is the x-intercept of the continuous function shown in the table
    5·2 answers
  • Compute P(X) using the binomial probability formula. Then determine whether the normal distribution can be used to estimate this
    15·1 answer
  • What is the solution to N &lt; 5
    6·1 answer
  • I need help ASAP please
    9·1 answer
  • 15 people are sharing $482 fairly between them. How many dollars should each person take?
    8·1 answer
  • Write 12/root2 + root18 in the form broot2 where b is an interger
    8·1 answer
  • Please help 20 points!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!