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
brilliants [131]
1 year ago
10

PLEASE HELP ME!!!!!!!!!

Mathematics
1 answer:
Makovka662 [10]1 year ago
6 0

Answer:

  (a)  (5, -3)

Step-by-step explanation:

The "substitution method" for solving a system of equations requires that you write an expression that can be substituted for a variable in one or more of the other equations in the system.

<h3>Expression to substitute</h3>

The given equations are ...

  • y = x -8
  • 2x +3y = 1

We notice the first equation gives an expression for y. This is exactly what we want to substitute for y in the second equation.

<h3>Substitution</h3>

When the expression (x-8) is substituted for y in the second equation, you get ...

  2x +3(x -8) = 1

This simplifies to ...

  5x -24 = 1

<h3>Solution</h3>

This 2-step equation can now be solved in the usual way:

  5x = 25 . . . . . . add 24 to isolate the variable term

  x = 25/5 = 5 . . . . . divide by the coefficient of x

Note that we now know what the correct answer choice is.

Using the expression for y, we find ...

  y = x -8 = 5 -8 = -3

The solution is (x, y) = (5, -3).

__

The attached graph confirms this solution.

You might be interested in
The midpoint of XY is (3,-5). Find the coordinates of point X. Y=(2.5,-6.5)
White raven [17]

Answer:

x=(2,-5.3)

Step-by-step explanation:

Hope this helps

7 0
2 years ago
Can anyone help me out, if you answer the question right i will give you a brainliest.
melisa1 [442]

Answer:

It's different because the experiment is more accurate as it progresses.

Step-by-step explanation:

You'll notice that the higher the numbers get in the experiment the closer it gets to your solution. The theoretical probability of flipping a coin is about 50% heads and 50% tails, but it doesn't always seem like that in an experiment. The experimental probability from your experimentation so far would be 62% of heads and 38% of tails.

4 0
3 years ago
Which number would make this number sentence true?
nlexa [21]

Answer: 15

Step-by-step explanation: Take 12 and change the -3 to a regular 3.

(12 + 3 = 15.)

Whichever number in the question that’s bigger determines what integer it will have.

4 0
3 years ago
Read 2 more answers
The table below shows the surface area y, in square feet, of a shrinking lake in x days:
andreyandreev [35.5K]
Based on the data, the most likely correlation coefficient would be -1.
The slope between 20 and 30 days is -1, and it represents the change in the surface area of the lake per day.
The data represents correlation, not causation.

Since the data would form a perfectly straight line through the points, the correlation coefficient would be -1 for a perfect decreasing fit.
To find the slope, find the change in the surface area between those days, the change in the days, and write it as surface area/days:  80-90=-10; 30-20=10; -10/10=-1
This is not causation because there could be lurking variables we cannot see.
6 0
3 years ago
Which set of ordered pairs is not a function?
NNADVOKAT [17]

Answer: the last one

Step-by-step explanation:

Because it has a similar number in the x variable. If it didn’t have the same number in the x variable it would be a function.

4 0
2 years ago
Other questions:
  • An even integer can be represented by the expression 2n, where n is any integer. Find three consecutive even integers that have
    14·1 answer
  • 6x^2+2x=3 round to the nearest hundreths
    14·1 answer
  • Can two numbers have the same absolute value
    11·2 answers
  • How can I solve this problem?
    8·1 answer
  • What is 1.234 + 8.89?
    11·2 answers
  • Can you help this plz
    6·1 answer
  • What has to happen for scales to be balanced?​
    11·2 answers
  • ㅤpoint c and point d are plotted on the graph. plot points a and b to form rectangle abdc with an area of 36 square units. plot
    13·2 answers
  • Please assist me in the geometry please !!!!
    8·1 answer
  • A force of 3 pounds is required to hold a spring stretched 0.6 feet beyond its natural length. how much work (in foot-pounds) is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!