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
Marat540 [252]
4 years ago
10

Please Help Me! Math Question!

Mathematics
2 answers:
Mekhanik [1.2K]4 years ago
7 0
To solve this pair of equations, by using the substitution method, all you have to do is simply choose 1 equation and simply solve for any variable X and or y. Then solve for the other equation, by plugging in the equation.

Y = X + 4
Y = -2x - 2

X + 4 = -2x - 2
0 = -3x - 6
-3x = 6
X = -6/3
X = -2.

Y = X + 4
Y = -2 + 4
Y = 2.

P(-2,2). The following point would be the solution to the equation.
adoni [48]4 years ago
3 0
This will be simple since They are both solved for Y. :) put them across from each other (in parenthesis if you want to show which one was substituted). So we have ( x + 4 )= -2x - 2. Next subtract the 4 from both sides and add 2x to each side. Now we have 3x = -6. Divide by 3 and get X=-2. Plug X into an original equation and solve for Y. y = (-2) + 4. Y=2                           (2, 2)
You might be interested in
Please help !!!!!!!!!
Ainat [17]

Answer:

5

Step-by-step explanation:

3x -12 = -36

-36 ÷ -3 = 12

-7 + 12 = 5

7 0
3 years ago
Read 2 more answers
SOMEONE PLEASE HELP ME ASAP
Alenkinab [10]
The answer to this question is C I just worked it out on paper using a calculator

5 0
3 years ago
Read 2 more answers
Can someone help me with this please
zavuch27 [327]

Answer:

8×

Step-by-step explanation:

you just add 7×+1 and the answer will be 8×

7 0
2 years ago
Math:(
dimulka [17.4K]

Answer:

Your friend is incorrect because if you divide 21 by 7 you will get 3 if you add 7 to 3 you get 10 therefore your friend is incorrect.

6 0
4 years ago
a circle is centered at the point -3,2) and passes through the point (1,5). The radius of the circle is blank units. The point (
lianna [129]
It's important that you share the complete question.  What is your goal here?  Double check to ensure that you have copied the entire problem correctly.

The general equation of a circle is x^2 + y^2 = r^2.  Here we know that the circle passes thru two points:  (-3,2) and (1,5).  Given that a third point on the circle is (-7, ? ), find the y-coordinate of this third point.


Subst. the known values (of the first point) into this equation:  (-3)^2 + (2)^2 = r^2.  Then 9 + 4 = 13 = r^2.

Let's check this.  Assuming that the equation of this specific circle is 
x^2 + y^2 = r^2 = 13, the point (1,5) must satisfy it.

(1)^2 + (5)^2 = 13 is not true, unfortunately.

(1)^2 + (5)^2 = 1 + 25 = 26 (very different from 13).

Check the original problem.  If it's different from that which you have shared, share the correct version and come back here for further help.



3 0
3 years ago
Other questions:
  • A meal consisting of a cheeseburger, large fries, and a chocolate shake provides a total of 1,120 kilocalories. forty-eight perc
    9·1 answer
  • Part
    10·1 answer
  • In October, Greg and Thomas had the same amount of money in their savings accounts. In November, Greg deposited $120 into his ac
    7·2 answers
  • What is 7.5 as a fraction ?
    15·2 answers
  • Which transformation(s) can map ΔLMN onto ΔL'M'N'?
    6·2 answers
  • Solve the compound inequality.<br> 5 &lt; 2x - 1 &lt; 9<br><br> Show your work
    9·1 answer
  • PLEASE HELP ME!!!! very easy. a picture is shown. i have half of it answered i just don’t know what to put for what EH and FG pl
    6·2 answers
  • 2. The volume of a cylinder varies jointly with its height and the square of the radius. A 7.85 cubic inch spice container is 2.
    5·1 answer
  • 3n+4 first the 7 terms
    8·1 answer
  • (1,2)(5,8) point slope form
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!