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
Ksenya-84 [330]
3 years ago
10

There are three exams in your linear algebra class, and you theorize that your score in each exam (out of 100) will be numerical

ly equal to the number of hours you study for that exam. The three exams count 20%, 30%, and 50%, respectively, toward the final grade. If your (modest) goal is to score 76% in the course, how many hours a, b, and c should you study for each of the three exams to minimize quantity a2 b2 c2
Mathematics
1 answer:
Romashka [77]3 years ago
7 0

Answer:

a) 40 hours

b) 60 hours

C) 100 hours

Step-by-step explanation:

0.2a + 0.3b+0.5c = 76

Hence: 0.2* (0.2 λ) +0.3*(0.3 λ )+0.5*(0.5 λ ) = 76

0.38 λ =76

λ = 76/0.38 =200

Thus : 40, 60, 100

You might be interested in
Jake tossed a paper cup 50 times and recorded how it landed. The table shows the results:
Dmitry [639]
Hello!

Here are 6 steps to Help You Out!

1. 3 divided by 50 = .06

2. Then if you like you can turn it in to a percent not sure how the answer is supposed to look for example:

<span><span>3. 3/50</span>=<span>6/100</span>=6%

</span>4. 7 divided by 50 - .14

5. so 0.06 for the first one

6. And 40 divided by 50 = .8

====>So as we can see, o<span>pen side up .06 closed side up .14 and  on its side .8 or open 6% closed 14% and side 80% chance.<====

Hope this Helps! Have A WONDERFUL Day! :)</span>
8 0
3 years ago
A square has sides 5.3cm long. Work out the area of the square
mezya [45]

Answer:

Area of square =  28.09 square cm.

Step-by-step explanation:

Given : A square has sides 5.3 cm long.

To find :  Work out the area of the square.

Solution : We have given

Side of square = 5 .3 cm .

Area of square =  side * side .

Area of square =  5.3 * 5.3 .

Area of square =  28.09 square cm.

Therefore, Area of square =  28.09 square cm.

4 0
3 years ago
Select the fraction that is NOT in lowest terms . which of these fractions is not in lowest term?
Kisachek [45]

Answer:

14/21

Step-by-step explanation:

14/21 is divisible by 7, and can reduce to 2/3

6 0
3 years ago
5 x 3 + 2 x 3 = 15 + __________
lorasvet [3.4K]
The anwser is going to be 6
5 0
3 years ago
Read 2 more answers
How to graph 2y-10x=20
aksik [14]
First, put it into slope/intercept form so you can see what you've got.

"Slope/intercept form" is    <em>  y = everything else</em>  .

So that means you have to take the equation you have and "solve it for 'y' ".

<u>2y - 10x = 20</u>

Add  10x  to each side:        2y = 10x + 20

Divide each side by  2 :       <em> y  =  5x  +  10</em>

There it is. 
Now that you have it in that form, you can just look at it and see that the
slope of the line on the graph is  5, and the line crosses the y-axis at 10.

And that's exactly the information you need to graph it.  On your graph,
mark a little dot on the y-axis at  10, and draw a line through that dot
with a slope of  5.
5 0
3 years ago
Other questions:
  • 50 points question!!!
    15·2 answers
  • I need help ASAP! Is it A,b,c, or d?
    15·1 answer
  • I WILL GIVE BRAINLYEST
    13·1 answer
  • Question in below. help plz
    15·1 answer
  • Ill give brainliest help asap!!
    5·2 answers
  • Find the height of a parallelogram thst has an area of 10.5 and a base of 3/4
    11·1 answer
  • Shauna needs a new backpack. Tee one she wants cost $28 The store is having a 15% sale off backpacks this Friday What will the p
    10·1 answer
  • 3x2 + 5x + 7 = 0.<br> what's the discriminant
    12·1 answer
  • Please help with this geometry work asp
    10·1 answer
  • &lt;
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!