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
zhuklara [117]
3 years ago
5

I don’t understand graphing.

Mathematics
1 answer:
pochemuha3 years ago
5 0

Answer:

same bro

Step-by-step explanation:

You might be interested in
A drink manufacturer increases the volume of its cans by 25%.They now hold 450ml.How much did they used to hold?
ss7ja [257]

Answer:

562.5ml

Step-by-step explanation:

using percentage multipliers you just have to do:

add 0.25 to 1 because that will make 125%

then multiply it by 450ml

450ml x 1.25 = 562.5ml

7 0
3 years ago
Can someone help me please? Use the linear combination method to solve the system of equations. Pretty please show your work and
Pavel [41]

Answer:

  (x, y) = (4, -3)

Step-by-step explanation:

  • x-3y=13
  • 2x+4y=-4

First of all, look at the given equations. Here, we see that the second equation has coefficients that all have a factor of 2. If we divide that out, we get an equation that has an x-coefficient of 1, matching the x-coefficient in the first equation.

Here is the reduced second equation:

  x +2y = -2

Now, if we subtract one equation from the other, the variable x will be eliminated. We want to choose that subtraction wisely.

We note that the y-coefficient in the first equation is less than that in the second equation. If we subtract the first equation from the second, the result will have a positive y-coefficient:

  (x +2y) -(x -3y) = (-2) -(13)

  5y = -15 . . . . . . . . . . . . . . . . simplify. Note that the x-variable is eliminated, which is the purpose of this exercise.

  y = -3 . . . . . . . divide by 5

We can use this value in the reduced second equation to find the value of x:

  x +2(-3) = -2

  x = 4 . . . . . . . . . add 6 and simplify

The solution is (x, y) = (4, -3).

_____

I find a graphing calculator provides an easy and reliable check of the answer.

_____

<em>Comment on linear combination</em>

This method is often called "elimination," because the purpose of combining the equations in a particular way is to eliminate one of the variables. This requires you look at the coefficients of the variables and devise a plan to combine them so the resulting coefficient for one of the variables is zero.

In the worst case, you can combine ...

  • ax +by = c
  • dx +ey = f

by multiplying the second equation by <em>a</em> and the first by <em>-d</em>:

  a(dx +ey) -d(ax +by) = a( f) -d(c)

  y(ae -bd) = fa -cd . . . . . . simplify; x is eliminated

This sort of approach results in a formula for the solution known as Cramer's Rule.

  y = (fa-cd)/(ae-bd)

The corresponding solution for x is ...

  x = (ce-bf)/(ae-bd)

__

The point of looking at the equations first is that you can often choose which variable to eliminate and what multiplier to use to minimize the amount of arithmetic involved—as we did above.

5 0
3 years ago
Read 2 more answers
What number sets do 17/3 belong to?​
Delicious77 [7]

Answer:

it is an improper fraction

Step-by-step explanation: mixed=5  2/3 is the mixed fraction

8 0
3 years ago
Answer the question below anything will help plssss
vekshin1
C.) Add 5 more drops of blue food coloring and 1/2 teaspoon more of distilled vinegar
6 0
2 years ago
Read 2 more answers
A student has $10. She will save $5 each week. The student wrote the expression show to represent the amount
Fittoniya [83]

Answer:

D. or 5(w+10)

Hope this helps :)

4 0
3 years ago
Other questions:
  • LAST QUESTION SEND HELP!!!!
    6·2 answers
  • I need help for this
    12·1 answer
  • What is the answer to 1.5 / 2.5 equals 3.5 / d
    9·1 answer
  • Bob and Carol want to hire Able Refinishing to sand and refinish the dining room floor to match the floor in the living room. Ab
    12·1 answer
  • Eight times the difference of y and nine
    14·1 answer
  • Write two expressions that are equivalent to the expression below. (9- c) +(9 -c)+(9- c) +(9- c)
    14·2 answers
  • Please help, Question in the picture!
    10·1 answer
  • 11/25= /100. Explain
    11·1 answer
  • -6 ÷ -2 (-1 - 3)2 x -1
    8·2 answers
  • Mary made a withdrawal of d dollars from her savings account. Her previous balance was $350, and her current balance is $280. Re
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!