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
maw [93]
3 years ago
5

4-15 all this is overdue and I cant understand anything

Mathematics
1 answer:
attashe74 [19]3 years ago
5 0

I'm not 100% sure how to do this, but it would help if you had any notes/online notes/textbook that shows how to do it (also to see if what I did is the same as the notes)


4. B<u>reak-even point</u> (It's basically the intersection point. Or the point when the two lines meet/the point that is the same for both equations)

I plugged in numbers for x into both equations, until C and R were the same number.  

I had x = 1, so I plugged in 1 for x into both equations:

C = 15x + 150                      C = 15(1) + 150 = 15 + 150 = 165

R = 45x                                R = 45(1) = 45

Then I had x = 2, then x = 3, and so on until C and R were the same number (meaning they had the same point), which was (5, 225)


Idk how you are suppose to check the solution because there are multiple ways to do this. I doubt this, but one option is plugging (5, 225) back into the equations:

C = 15x + 150                                                                R = 45x

225 = 15(5) + 150                                                     225 = 45(5)

225 = 75 + 150                                                         225 = 225

225 = 225


5. (I made another sort of table? because I didn't know what kind you were suppose to use)   Do the same as #4, and plug in numbers for x until C and R were the same number


6. Do the same as #4   (If you have any questions or information I should know then let me know)


7.   y = mx + b  

"m" is the slope, "b" is the y-intercept [the y value when x = 0   (0, y)]

The y-intercepts are -2 and 13, so the graph is B. Now you need to estimate the solution(point of intersection) by looking at the graph. It looks around (6,7).

Now you need to check the solution by plugging the point into both equations.

y = 1.5x - 2

7 = 1.5(6) - 2

7 = 9 - 2

7 = 7


y = -x + 13

7 = -6 + 13

7 = 7                 The point is the solution


8. The graph is A. Do the same as #7 and estimate a point. I will say around (2.5,6.5)  And check this by plugging the point into both equations

y = x + 4

6.5 = 2.5 + 4

6.5 = 6.5


y = 3x - 1

6.5 = 3(2.5) - 1

6.5 = 7.5 - 1

6.5 = 6.5        The point is the solution


9. Graph C, do the same as #7 and #8


10. y = mx + b

"b" is (0,b) or (0,y)

"m" is the slope

(slope=\frac{rise}{run}  

Rise is the number of units you go up(+) or down(-)

Run is the number of units you go to the right)


You need to graph the lines of each equation, and find the point of intersection.


11-15. Do the same as #10

If "y" is not by itself, get it by itself.

#13:

x + y = 27    Subtract x on both sides to get "y" by itself

y = 27 - x

You might be interested in
What is the best estimate of 2π²?
Rasek [7]
2π^2=19.7392088 to 20 since 19.7392088 is closer to 20.
6 0
3 years ago
7070
SVETLANKA909090 [29]

Answer:

do you want the answer because i am telling your teacher that you are cheating

Step-by-step explanation:

8 0
3 years ago
Solve the equation by showing the work<br> X/3 -6 = -2
zavuch27 [327]

Answer:

X is negative 5/ -5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Is 336 − –5,083 positive or negative?
Vesna [10]

Answer:

positive

Step-by-step explanation:

if you subtract a negative number, it’s the same as adding a positive number. If you add 2 positive numbers, you get a positive number, so the expression is positive.

3 0
2 years ago
Read 2 more answers
The short sides of a rectangle are 2 inches. The long sides of the same rectangle are three less than an unknown number of inche
Amiraneli [1.4K]

<u>Answer</u>

The first student was right.

The length of the long side is at least 13 inches.

<u>Explanation</u>

The perimeter of any figure is the distance all round.

Perimeter of a rectangle = 2(l+w). Where l is length and w is the width.

2(l + w) ≥ 30

2{(x-3) + 2} ≥ 30

2(x-3+2) = 30

2(x - 1) ≥ 30

x - 1 ≥ 15

x ≥ 16

When x = 16,

l = 16-3

  = 13 inches

The length of the long side is 13 inches. The first student was right.

8 0
3 years ago
Read 2 more answers
Other questions:
  • An airplane covers 94 miles in 1/6 of n hour. The plane can cover how many miles in 6 hours
    14·2 answers
  • a scale drawn on the map shows that 1 inch represents 16 miles. if two cities are 3.25 inches apart on the map, what is the dist
    14·1 answer
  • PLEASE HELP! a rectangular picture frame has a perimeter of 58 inches.the height of the frame is 16 inches.what is the width of
    13·2 answers
  • Help with math question
    13·1 answer
  • PLEASE HELP ASAP!
    9·1 answer
  • Pls help me its timed and for a grade I really struggle with this.
    8·1 answer
  • PLEASE HURRY!!!!!<br><br><br> What is the turning point of the graph of f(x) = |x – 4| ?
    15·1 answer
  • (03.03)
    7·1 answer
  • PLEASE HELP
    12·2 answers
  • Jacque needs to buy some pizzas for a party at her office. She's ordering from a restaurant that charges a \$7.50$7.50dollar sig
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!