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
pshichka [43]
3 years ago
15

4 questions 50 points(algebra)

Mathematics
2 answers:
user100 [1]3 years ago
8 0

Answer: 10 L of pure and 20 L of 10%

<u>Step-by-step explanation:</u>

                        <u> Qty </u>            <u>  %    </u>             <u>  Qty * %</u>

Solution 1:          x                 1.00                   1(x)         =      1.00x

Solution 2:     <u>30 - x    </u>         0.10              0.10(30 - x) = <u>3 - 0.10x</u>

Total:                30                0.40               30(0.40)    = 3 + 0.90x

                                                              ⇒        12        = 3 + 0.90x

                                                                        <u> -3       </u>    <u>-3              </u>

                                                                           9        =       0.90x

                                                                     <u> ÷ 0.90    </u>       <u>÷0.90   </u>

                                                                            10       =            x

Solution 1: x    = 10

Solution 2: 30 - x    = 30 - 10   = 20

*******************************************************************************************

Answer: 16

<u>Step-by-step explanation:</u>

Constraints:  x + 3y ≤ 6

                      x +  y ≤ 4

                             x ≥ 0

                             y ≥ 0

Vertices can be found by graphing the above equations or by solving the system of equations.  Vertices: (0, 2), (3, 1), and (4, 0)

Objective function: F = 4x + 3y

(0, 2): F = 4(0) + 3(2)

            =   0   +   6

           =         6

(3, 1): F = 4(3) + 3(1)

            =  12  +   3

           =       15

(4, 0): F = 4(4) + 3(0)

            =  16   +   0

           =        16

The maximum is 16, which occurs when x = 4 and y = 0

*******************************************************************************************

Answer: A = 23,000   B = 14,100   C = 8,900

<u>Step-by-step explanation:</u>

Qty:  A + B + C = 46,000   where A = B + C

         x +    x     = 46,000

                2x = 46,000

                  x = 23,000

Section A: 23, 000 seats

Section B: 23,000 - y

Section C: y

Cost:    35A        +         20B          + 15C = 1,220,500

       35(23,000) + 20(23,000 - y) + 15(y) = 1,220,500

        805,000    + 460,000 - 20y + 15y  = 1,220,500

                          1,265,000           -5y      = 1,220,500

                        <u> -1,265,000                     </u>    <u>1,265,000   </u>  

                                                      -5y      =     -44,500  

                                                  <u>  ÷-5       </u>     <u>           ÷-5 </u>    

                                                          y      =      8,900          

Section B: 23,000 - y   = 23,000 - 8.900   = 14,100

*******************************************************************************************

\left[\begin{array}{ccc}-8&2&5\\4&-9&6\\\end{array}\right]


                                           

MrRissso [65]3 years ago
3 0

Answer:

10 l 20 l

Step-by-step explanation:

You might be interested in
What is the solution of the system <br> 3x + 2y =18 <br> Y= -2/3x + 12
laiz [17]

Answer:

3x + 2y =18


Y= -2/3x + 12

3x + 2(-2/3x+12) = 18

3x + (-4/3x+24) = 18

3x + -1 1/3x +24 =18

1 2/3x +24 = 18

1 2/3x = -6

5/3x = -6

x = -3.75

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
PLEASE ANSWER QUICKLY! THANK YOU :) <br><br>​
Natalka [10]
It’s not b or d so it’s either a or c. Hope this helped
4 0
3 years ago
Can someone help please
crimeas [40]
Answer is 5 because the other sides are 9 each
7 0
3 years ago
Read 2 more answers
.
bija089 [108]

Answer:

The Parenthesis tells you what operation to do first.

Step-by-step explanation:

Why? Because you have to get rid of the Parenthesis before getting rid of anything else in the problem.

4 0
2 years ago
Describe in detail two different real-world situations in which you could use the Pythagorean Theorem.
omeli [17]

Answer:

you can use it in architecture and construction

Step-by-step explanation:

say you are building a sloped roof. If you know the height of the roof and the length for it to cover, you can use the Pythagorean Theorem to find the diagonal length of the roof's slope. You can use this information to cut properly sized beams to support the roof, or calculate the area of the roof that you would need to shingle. I hope this helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • Best explained and correct answer gets brainliest.
    13·1 answer
  • Hey there! can you please help me posted picture of question
    12·1 answer
  • 2√15 =√15/3 = 5<br> IS THIS STATEMENT CORRECT <br> PLS EXPLAIN WITH CORRECT ONE
    11·1 answer
  • Find any values of the variable for which each rational expression is undefined. Write answers with the symbol ≠.
    12·1 answer
  • (dH/dt)=k(68-H) find the general solution for the differential equation
    9·1 answer
  • HELP PLEASE! Will give out brainliest
    6·1 answer
  • Put the fraction in order from least to greatest 1/2 1/4 1/3 3/4
    7·2 answers
  • How are the points (4,5) and (-4,5) related?
    9·2 answers
  • If one of the 50 states is chosen at random, then a standard die is rolled, Find the probability of getting a state that starts
    6·1 answer
  • NEED THE ANSWER ASAP!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!