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
BigorU [14]
3 years ago
11

Solve simultaneous equation by substitution method y-4x=6 2y-3x=4

Mathematics
1 answer:
Tju [1.3M]3 years ago
4 0

Answer:

Step-by-step explanation:

y-4x=6

y=6+4x, using this value in 2y-3x=4 gives

2(6+4x)-3x=4

12+8x-3x=4

5x+12=4

5x=-8

x= -8/5= -1.6, making y=6+4x become

y=6+4(-1.6)

y= -0.4, so the solution is the point

(-1.6, -0.4)

You might be interested in
Please help with question C
MAVERICK [17]

Answer:

55% percentage mark up

Step-by-step explanation:

Formula = Gross profit /  Cost of item  * 100    First we find the Cost of item = 39.99 / 06 = 66.65 as 66.65 * 0.60 = 39.99  then we find the Gross profit 66.65 - 29.99 = 36.66 then plug into the formula  36.66/66.65 * 100 =55.0037509% = 55%

4 0
2 years ago
Read 2 more answers
5x + 7y = -29, y = x + 1
Afina-wow [57]

Answer:d

Step-by-step explanation:

6 0
3 years ago
Bob has a dog who weighs 12 pounds. His cat weighs 2/3 as much as the dog. How many pounds does his cat weigh?
zheka24 [161]
The dog weighs 12 lbs.
The cat weighs 2/3 as much as the dog


- Divide 12 by 3
= 4

- Then multiply by 2
= 8

His cat weighs 8 pounds.
5 0
3 years ago
A lamp was on sale for 25% off its regular price of $80. Craig had a coupon that took an additional 25%
hram777 [196]

Answer:

$45

Step-by-step explanation:

The sale price changed from $80 to 60, then with the coupon another 25% was taken off leading it to come to a price of $45

$80 x .75 = 60

$60 x .75 = 45

(.75 is for the price of the original value that he will be paying later)

6 0
3 years ago
Please i really need help <br> for both qeutions<br> 100 points
Luba_88 [7]

Answer:

7. a) slope = 5

7. b) slope = 1/2

8. slope = 1

Step-by-step explanation:

slope = rise/run

rise is the vertical change, run is the horizontal change

7. a)

Pick any two points on your line. (0,0) and (1,5) are easy to work with.

The vertical change between the two points is 5

The horizontal change between those points is 1

so slope = 5/1 = 5

7. b)

Again, you can use (0,0) as one of your points. The point (2,4) is good as the second.

slope = 4/2 = 1/2

8. We don't have a graph, but we are given two points to work with, (1,4) and (5,8). Use the formula given...

m = slope = (y2-y1) / (x2-x1)

= (8 - 4) / (5 - 1)

= 4/4

= 1

I hope that helped!

8 0
2 years ago
Other questions:
  • If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
    7·1 answer
  • One-Fourth of a number is 14. Find the number.
    13·1 answer
  • What is the area of this regular hexagon that has been divided into six congruent triangles?
    8·2 answers
  • Q6) You have a credit card that awards you a "cash back bonus." This means that every time you use your credit card to make a pu
    9·1 answer
  • A 25-foot magazine rack begins 20 feet south of the checkout desk and continues south. What are the coordinates of the beginning
    8·2 answers
  • A factory uses a special kind of lubricant to maintain its two milling machines. Weekly lubricant usage for each machine is an i
    5·1 answer
  • Hi, can someone help pls! Which of the following is a counterexample for the claim that √x^2 = x ?
    12·1 answer
  • Evaluate the expression when a=3 .​<br><br> 27÷a =<br><br> Answer:
    11·2 answers
  • The point (12.-5) is<br> how many units away from the origin
    7·1 answer
  • PLS HELP :( i’ve been trying to understand this but i cant. please explain this if you know how to do it pleaseee
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!