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
Party punch cost $2.50 per half gallon. How much would 6 gallons cost!!!!! HELP ASAP DUE AT MIDNIGHT
Montano1993 [528]

Answer:

2.50 times 2 is 5. $5 is now 1 gallon. 5 time 6 equal $30. $30 dollar is your answer. Please mark brainly!!

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Classify the following triangle. Check all that apply.
Vikentia [17]

Answer:

it is an isosceles obtuse triangle.....

you can choose anyone

isosceles ( since two of its sides are equal but not the third)

or obtuse ( since one angle is more than 90)

3 0
3 years ago
there are 10 crates of eggs stacked in the corner. each crate of eggs holds 20 eggs. If there is only 1 broken egg in the entire
alisha [4.7K]

Answer: 5%

Step-by-step explanation: If there is one broken egg in each crate (1/20), you would change that to5%

And if there are ten crates, then you see how many eggs there a re total.

(10 × 20 = 200)

If there are 200 eggs and for every 20 eggs there is on broken one, then there will be 10 broken eggs total. or 10/200

convert the fraction to a decimal ( 10 ÷ 200 = .05)

then convert the decimal to a percent. .05 is equal to 5%

PLEAZE RATE BRAINLIEST!!!

3 0
3 years ago
Alberto is painting a large triangle on one wall of his bedroom. The base of the triangle is 4 ft, and the height is 8 ft. It ta
N76 [4]

Answer:   3.2 qts

Step-by-step explanation:

A=1/2 * b *h

1/2 * 4*8 = 16 square foot

Area is 16 square foot

Multiply the area by the quarts of paint it takes to cover 1 square foot.

16 * 0.2 = 3.2 qts

4 0
3 years ago
In a group discussion, which option is most clearly a clarifying question?
Mariulka [41]

Answer:

your answer should be d

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose you pay $88 for a pair of shoes that has been discounted 20%. What is the original price of the shoes before the discoun
    5·2 answers
  • Last year, Jora spent
    6·1 answer
  • Can someone help me ASAP??
    8·1 answer
  • twelve decreased by twice a number is the same as 8 times the sum of the number plus 4. What is the number
    6·1 answer
  • Find the domain and range, graph
    8·1 answer
  • Help again for the last time ;-;
    6·1 answer
  • (X+2)(x-4)(x+7)(x-1)
    8·1 answer
  • Write a <img src="https://tex.z-dn.net/?f=y%3D%5Cfrac%7B4%7D%7B5%7Dx-2" id="TexFormula1" title="y=\frac{4}{5}x-2" alt="y=\frac{4
    11·1 answer
  • Help brainlist to first awnser
    12·2 answers
  • Jill has an old bike. her parents gave her 40$ to repair it new tires is 21$ she also wants to buy a bell 5$ and a basket 13$ ho
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!