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stepan [7]
2 years ago
12

PLEASE HELP THESE ARE MY ONLY POINT ;-; PLEASE

Mathematics
1 answer:
Zolol [24]2 years ago
3 0

Answer:

a) max 12000 , min 0

b) no solution

c) pricing based on profit

Step-by-step explanation:

a) look at the parabola

b) there is more than one x (0)

c) the y intercepts represent his profit based on how much he priced the items at

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Solve the simultaneous equations. You must show all your working to find x and y. 1/2x -3y = 9 5x y + y = 28
Anastaziya [24]

<em>The right question is:</em>

\frac{1}{2}x - 3y = 9

5x + y = 28

Answer:

<em></em>x = 6<em> </em>

y = -2<em></em>

<em></em>

Step-by-step explanation:

Given

\frac{1}{2}x - 3y = 9

5x + y = 28

Required

Solve for x and y

Make y the subject of formula in the second equation

y = 28 - 5x

Substitute y = 28 - 5x in the first equation

\frac{1}{2}x - 3(28 - 5x) = 9

Open the bracket

\frac{1}{2}x - 3*28 - 3*- 5x = 9

\frac{1}{2}x - 84 + 15x = 9

Collect Like Terms

\frac{1}{2}x  + 15x = 9+ 84

\frac{x}{2}  + 15x = 9+ 84

\frac{x+30x}{2} = 93

\frac{31x}{2} = 93

Multiply both sides by 2

2 * \frac{31x}{2} = 93 * 2

31x = 186

Divide both sides by 31

\frac{31x}{31} = \frac{186}{31}

x = \frac{186}{31}

x = 6

Recall that y = 28 - 5x

So;

y = 28 - 5 * 6

y = 28 - 30

y = -2

Hence;

<em></em>x = 6<em> and </em>y = -2<em></em>

8 0
2 years ago
Read 2 more answers
What are the $x$ - and $y$ -intercepts of the equation $3x+4y=24$ ?
Angelina_Jolie [31]

The x and the y-intercepts of the function are 8 and 6, respectively

<h3>Intercepts</h3>

The intercepts of a function are the points where the graph of the function crosses the x-axis

<h3>The function</h3>

The function is given as:

3x + 4y = 24

Set y to 0, to calculate the x-intercept

3x + 4(0) = 24

3x  = 24

Divide both sides by 3

x  = 8

Set x to 0, to calculate the y-intercept

3(0) + 4y = 24

4y = 24

Divide both sides by 4

y = 6

Hence, the x and the y-intercepts of the function are 8 and 6, respectively

Read more about intercepts at:

brainly.com/question/26233

7 0
2 years ago
What is the answer for <br> 4[8-(8)]+1
ivann1987 [24]

Answer:1

Step-by-step explanation:

7 0
2 years ago
Rewrite in simplest terms: -0.2t - 5 (-8t + 5)
SVETLANKA909090 [29]

Answer: 40.2t - 25

Step-by-step explanation:

-0.2t - 5 (-8t + 5)

-0.2t + 40t -25

39.8t - 25

6 0
3 years ago
Find the volume of the triangular pyramid shown below
Greeley [361]

Answer:

B

Step-by-step explanation:

6 0
2 years ago
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