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
Illusion [34]
3 years ago
14

Danielle’s chemistry professor has a complicated grading system. Each lab counts once and each test counts as two labs. At the e

nd of the semes-ter there is a fnal lab that counts as three regular labs. Danielle received scores of 84, 81, and 93 on her labs and scores of 89 and 94 on her tests. What score must she get on the fnal lab to receive an A (an A is 90)

Mathematics
1 answer:
Murrr4er [49]3 years ago
6 0

Answer:

92

Step-by-step explanation:

Lab Scores are 84, 81, and 93

Test Scores are 89 and 94

Each lab counts once and each test counts as two labs. At the end of the semester there is a final lab that counts as three regular labs.

Total Number of Labs= (3X1)+(2X2)+(1X3) =3+4+3 =10

To recieve an A(90), the average of her scores must be 90.

Let her final lab score =b

Refer to the attached diagram

Total Score=624+3b

For her average =90

\frac{624+3b}{10}=90

Cross multiplying

624+3b =90 X 10

624+3b =900

3b =900-624

3b =276

Dividing both sides by 3

b= 92

She must score 92 in her final lab to receive an A.

You might be interested in
What is the equation in math N+8=-10
sp2606 [1]

Your answer is...

N = -18

-18 + 8 = -10

4 0
3 years ago
Read 2 more answers
Please help me on this!!​
almond37 [142]

Answer:

TW = ST

Step-by-step explanation:

RS = RW (Given)

RT = RT (reflexive property)

This makes ∆RST congruent to ∆RWT based on the reflexive property of congruence.

Therefore, the third corresponding sides, TW and ST would be congruent to each other.

Thus:

TW = ST

4 0
3 years ago
Convert 35 inches to yards. Explain or show how you got your answer.
Gwar [14]

Answer:

0.972222 yards

Step-by-step explanation:

35/36= 0.972222

7 0
3 years ago
Which of these is true?
Furkat [3]

Answer:

C

Step-by-step explanation:

Tell me if you need or want an explanation

5 0
3 years ago
Given the point and it''s image, determine the scale factor. A (3, 6) A'' (4.5, 9) G'' (3, 6) G (1.5, 3) B (2, 5) B'' (1, 2.5).
Natasha2012 [34]
Put the value of the letters with " over the original
So for A we have 3 in the front and 4.5 for A"
4.5/3 = 1.5
We can check if this is actually the scale factor but using the other numbers
The second numbers for A and A" are 6 and 9
6 * 1.5 = 9
So for point A it is 1.5
Use the same thing for G. That gives you 2
For B, you get 0.5
So the scale factors are 1.5, 2, and 0.5
5 0
3 years ago
Other questions:
  • The slope of the equation in the picture
    13·1 answer
  • A swimming pool is being filled at the rate of 12 cubic yards per minute. If the pool is 18 yards long, 10 yards wide, and 3 yar
    14·1 answer
  • Which expression has the same value as the one below?<br> 50 + (-17)
    6·2 answers
  • I need help solving<br> simplify 12 over 14
    14·2 answers
  • H(x)= -x^2+3x for h(-3)
    10·1 answer
  • If 630 sweets were distributed among Ben,
    8·1 answer
  • Can someone help me plz
    7·2 answers
  • What is the unknown fraction?
    14·2 answers
  • Find the distance between the two points in simplest radical form.<br> (-5,8) and (-3, 1)
    10·1 answer
  • Footware manufacturing is projected to decrease output by 8. 4% from 2006 to 2016. If footware manufacturing had 1. 8 billion do
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!