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
tekilochka [14]
3 years ago
6

On three examinations, you have grades of 85, 78, and 84. There is still a final examination, which counts as one grade In order

to get an A your average must be at least 90. If you get 100 on the final, what is your numerical average? 86.75 (Type an integer or a decimal.) Is an A in the course possible? Yes No To eam a B in the course, you must have a final average of at least 80 What grade must you got on the final to earn a B in the course? Type an integer or a decimal) Enter your answer in the answer box and then click Check Answer All parts showing Clear All Pearson Copyright © 2019 Pearson Education Inc. All rights reserved. Terms of Use Privacy
Mathematics
1 answer:
Greeley [361]3 years ago
6 0

Answer:

  • It's not possible to earn an A in the course
  • I must have a 73 or MORE to earn a B in the course

Step-by-step explanation:

The average obtained at the end of the course will be:

\frac{85+78+84+x}{4} = av

Where x is the grade obtained in the final examination and av is the final average. To obtain an A, av has to be at least 90, av≥90, and to obtain an B, av has to be at least 80, av≥80

  • Is an A in the course possible?

So, if we get 100 on the final average:

x = 100,

av = (85+78+84+100)/4 = 86,75 and  86,75∠90.

<em>Answer: No, the higher grade obtained would be 86,75.</em>

  • What grade you must have in the final to earn a B in the course

To earn a B, av≥80:

av= \frac{85+78+84+x}{4 \ }\geq  80\\ \frac{247+x}{4}\geq80   \\247+x\geq 80*4\\ x\geq 320-247\\ x\geq 73

<em>Answer: I must have a 73 or MORE to earn a B in the course</em>

You might be interested in
Solve for d<br><br><br><br>please I will mark brainliest ​
svetlana [45]
D= -91 hope this will help you
7 0
3 years ago
List all of the factors of 72
True [87]
Well the factors of "72" is→ 1,2,3,4,6,8,9,12,18,24,36,72

To find the factor(s) "72" just write out the muliples that equals 72 
3 0
2 years ago
Read 2 more answers
Jackson is buying a new TV for $650. He will also be
Zina [86]

Answer:

his total bill would be 698.75

Step-by-step explanation

you only did half of the problem lol.

48.75 is just the sales tax. to get the total bill, you need to add 650 to 48.75 because 650 is the actual price of the TV

hope this helps :)

8 0
3 years ago
Read 2 more answers
GIVING BRAILEST<br> Describe a situation that the equation could represent g+3<br> _____ =15<br> 6
krek1111 [17]

Answer:

g=153

Step-by-step explanation:

i hope this helped...

6 0
2 years ago
20 po
Kobotan [32]

Answer:

Step-by-step explanation:

B

8 0
3 years ago
Other questions:
  • A car is traveling at a speed of 81 miles per hour. What is the car's speed in feet per second? How many feet will the car trave
    13·1 answer
  • What is the area of rectangle PQRS?
    9·2 answers
  • What is 2/3y for y = 18
    14·2 answers
  • X+3y=9. graph using slope and y-intercept
    9·2 answers
  • I need the answer been breaking my back all day
    8·2 answers
  • Theresa has 9 Papers each day and she also has 815 color how ma y Papers does she have
    15·1 answer
  • A) If each interior angle measures 20, how many sides does the polygon have?
    12·1 answer
  • PLEASE HELP ASAP
    9·1 answer
  • Fill in the blanks below.
    15·1 answer
  • In the context of draining the pool, AMOUNT OF WATER in the pool is the<br> *Testing lol*
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!