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
STatiana [176]
3 years ago
15

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on th

e final exam. There are 100 points available for each score. However, the lab score is worth 23% of your total grade, each major test is worth 21.5%, and the final exam is worth 34%. Compute the weighted average for the following scores: 67 on the lab, 69 on the first major test, 85 on the second major test, and 63 on the final exam.
Mathematics
1 answer:
Serggg [28]3 years ago
8 0

Answer:

The weighted average is of 69.94.

Step-by-step explanation:

Weighted average:

The weighed average is found multiplying each grade by its respective weight.

The grades, and weights are:

67 on the lab, with a weight of 23% = 0.23

69 on the first major test, with a weight is 21.5% = 0.215

85 on the second major test, with a weight is 21.5% = 0.215.

63 on the final exam, with a weight of 34% = 0.34.

Weighted average:

A = 0.23*67 + 0.215*69 + 0.215*85 + 0.34*63 = 69.94

The weighted average is of 69.94.

You might be interested in
Factor the polynomial: 1–bx–x+b
mylen [45]

Answer:

1-bx-x+b

Step-by-step explanation:

This can't be factored with rational numbers.

6 0
2 years ago
Read 2 more answers
Please help me out with this
Olin [163]
The pattern is multiplying by 3. So it will be: 243, 729
4 0
2 years ago
Read 2 more answers
Watch help video If you place a 13-foot ladder against the top of a 12-foot building, how many feet will the bottom of the ladde
riadik2000 [5.3K]
\begin{gathered} X\text{ will represent the bottom of the ladder fom the bottom of the building} \\ U\text{sing pythagoras Theorem} \\ (Hyp)^2=(opp)^2+(Adj)^2 \\ 13^2=x^2+12^2 \\ 169=x^2\text{ +144} \\ 169-144=x^2 \\ 25=x^2 \\ x^2\text{ = 25} \\ x\text{ = }\sqrt[]{25} \\ x\text{ = 5foot} \end{gathered}

6 0
1 year ago
How to solve this <br><br> 4x-3(x-2)=21
Natasha_Volkova [10]

We can start by getting rid of parenthesis:

4x-3x+6=21

Then we can combine like terms:

x=21-6

x=15

So our end product is x=15.

Hope I helped soz if I'm wrong ouo.

~Potato.

Copyright Potato 2019.

4 0
3 years ago
Suppose you invest $100 a month in an annuity that
Dominik [7]

Answer:

  $2502.60

Step-by-step explanation:

The formula for the amount of an annuity due is ...

  A = P(1 +r/n)((1 +r/n)^(nt) -1)/(r/n)

where P is the monthly payment (100), r is the annual interest rate (.04), n is the number of compoundings per year (12), and t is the number of years (2). Given these numbers, the formula evaluates to ...

  A = $100(1.00333333)(1.00333333^24 -1)/0.00333333

  = $100(301)(0.08314296)

  = $2502.60

_____

This value is confirmed by a financial calculator. The given answer choices all appear to be incorrect. The closest one corresponds to an annual interest rate (APR) of 4.286%, not 4%.

4 0
3 years ago
Read 2 more answers
Other questions:
  • I need help with this Question for school
    13·1 answer
  • How is the answer -1? How do I get it?
    8·2 answers
  • A board is 60.96 centimeters long. How long is the board in inches?
    10·2 answers
  • What’s the answer to 7^3x=54
    14·1 answer
  • Luis le dice a su amiga: "Yo tengo ahora el triple de edad que tú tenías, cuando yo tenía la edad que tú tienes ahora". Si entre
    15·1 answer
  • If using the method of completing the square to solve the quadratic equation x^2+5x-37=0, which number would have to be added to
    13·2 answers
  • Mrs. Claus wants to have a nice meal ready when Santa comes home. She wants to make waffles and she knows that he will be hungry
    13·1 answer
  • Alina wants to make some yummy sugar cookies today!
    5·1 answer
  • The perimeter of a rectangular book is given as 16.84 cm. Find the length of the rectangular book (in decimals) whose width is 1
    11·1 answer
  • What is a perfect 5 pointed star
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!