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
azamat
3 years ago
12

Y = −3x 4x + y = 2 ------------------ y = 7x − 5 2x + y = 13

Mathematics
1 answer:
MArishka [77]3 years ago
5 0

Answer:

4x+(-3x) = 2

4x - 3x = 2

x = 2

_________

2x + 7x - 5 = 13

9x = 13 + 5

9x = 18

x = 18 / 9

x = 2

You might be interested in
A digital camera cost $229.The camera is on sale for 30% off and you have a coupon for an additional 15% off the original price.
ZanzabumX [31]
The answer is $103.05! Not a bad price if you ask me!
7 0
3 years ago
Al s cat weighs 6 3/5 pounds what is the weight of al,s cat written as a decimal
Tamiku [17]
The correct answer is C
to get 5 to 100, multiply by 20, so multiply 3 by 20 as well. 
8 0
3 years ago
She arrived at the car park at 2.15pm and leaves at 4.45pm on Thursday. how much does Diane pay for her car parking? Monday - Fr
kondor19780726 [428]

Answer:

£4.50

Step-by-step explanation:

She is at the car park for 2 hours and 30 minutes.

It would be £4.50 because 2 hours and 30 minutes is between 2-4 hours.

It can't be £3.00 because it would be too little time (2 hours or less) and it wouldn't be £5.50 because she would be paying for more time than she was there for (5 hours or more).

Hope this helps :)

3 0
3 years ago
Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8.
Reil [10]

In this problem, given the focus at (2,4) and directrix at y = 8. then it is implied that the parabola is facing downwards. The vertex hence is at the middle of the focus and the directrix, hence at (2, 6). The general formula of the parabola is y-k = -4a  ( x-h)^2. Substituting, y -6 = -1/8 *(x-2)^2. Answer is A. 
7 0
3 years ago
Read 2 more answers
(CO 6) If the linear correlation coefficient is -0.491, what is the
Sedbober [7]

The value of co-efficient of determination is 0.241.

<h3>What is the relationship between linear co-relation co-efficient and co-efficient of determination ?</h3>

The co-efficient of determination R² is similar to the linear correlation co-efficient.

We can think of co-relation of determination as a percentage. It gives us the data for how much percentage of data will fall within the linear co-relation.The higher the percentage the more data falls within.If the coefficient is 0.5 then 50% of data falls within the linear co-relation.

According to the given question

Linear correlation coefficient is -0.491

∴ Co-efficient of determination is (-.491)² which is equal to 0.241.

Learn more about Linear regression here :

brainly.com/question/14313391

#SPJ1

8 0
1 year ago
Other questions:
  • A scale drawing has a scale of 3 in. . 1 ft. What is the scale factor?
    10·2 answers
  • What is the probability that you will not roll doubles when rolling two fair fifty sided dice (the sides are numbered 1-50 on ea
    9·1 answer
  • Part 1: Determine the slope of the line. Show the work you did to find the slope.<br> (3 points)
    7·1 answer
  • Simplify each ratio to lowest terms.
    15·2 answers
  • 2x-3y=-1, 2x+y=11solve the system equation
    11·1 answer
  • Norio, Gayle, and Tonya are playing a card game. They have a stack of red cards, a stack of yellow cards, and a stack of green c
    5·1 answer
  • Evaluate g(x)=3x when x=−2,0, and 5.<br><br> g(−2)= <br><br> g(0)= <br><br> g(5)=
    14·1 answer
  • Just need help with number 2 I will GUVE brainliest
    7·1 answer
  • Solve the equation 12v+10v+14=80
    13·1 answer
  • If biology is 40% and chemistry is 24% and earth science is blank and so is physics. There are 4% more students signed up for an
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!