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
Anna35 [415]
3 years ago
13

How do you solve this problem using substitution and then check it?:y= -3x-2 2x+5y=16

Mathematics
2 answers:
IrinaVladis [17]3 years ago
8 0
We have the variable y so lets substitute
y=-3x-2
2x+5y=16

2x+5y=16
2x+5(-3x-2)=16
2x-15x-10=16
-13x=26
x=-2

y=-3x-2
  =-3(-2)-2
  =4

2x+5y=16
2(-2)+5(4)=16
-4+20=16
16=16
VashaNatasha [74]3 years ago
4 0
You have to get a variable by itself like in here... Y is itself so in the other equation or we can say second one you just have to sub it in... Like

2x+5(-3x-2)=16
2x-15x-10=16
Now you just have to subtract 2 from 15, because of the same variable that is (x)
So -13x-10=16
Take 10 to the other side means add from the both sides, that will get you at
-13x=26
So now x= -2
Remember you added because it was -10 if it would be a positive 10 then you have to subtract it from both of the sides but since here it was negative so you just added them up
Hope i helped
You might be interested in
Which of the tables represent a function??<br>please help me! asap!​
Katyanochek1 [597]
The answer is table C
For anything to be a function, it cannot have two pairs as my teacher taught me!
For example, let’s take the number 4
Let’s say 4 can take a friend to the fair!
4 decided to take 5 (4,5)
4 CANNOT take anyone else but 5
4 is allowed to take as many 5’s as they want but cannot take any other number
Let’s set up a table

X. Y
4. 5
4. 5
4. 5
This is a function

If the table changed:
X. Y.
4. 5
4. 5
4. 6
This will not be a function
I hope this helps!
8 0
2 years ago
A chess player moves a knight from the location (3, 2) to (5, 1) on a chessboard. If the bottom-left square is labeled (1, 1), t
KATRIN_1 [288]

Answer:

T(2, -1)

T(1, 2)

Step-by-step explanation:

From (3, 2) to (5, 1), the translation is T(2, -1). x goes up by 2. y goes down by 1.

From (5, 1) to (6, 3), the translation is T(1, 2). x goes up by 1. y goes up by 2.

6 0
3 years ago
Read 2 more answers
The table shows the relationship of how many cherries are needed to make a certain number of pies
Olin [163]
What table? Maybe if you include the table and the question I could help you more
5 0
3 years ago
X/-5=-20<br><br> A -100 or 100<br> B -4 or 4<br> C 100<br> D no solution
alexgriva [62]

Move the negative sign to the left

-x/5 = -20

Multiply both sides by 5

-x = -20 × 5

Simplify 20 × 5 to 100

-x = -100

Multiply both sides by -1

<em>x = 100</em>

<u>C. 100</u>

4 0
3 years ago
Read 2 more answers
Find the slope of (2,-3) and (-3,2)
victus00 [196]

Answer:

m= -1

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify the expression. 3t(t - 5) + 6t to the 2nd power
    5·1 answer
  • 75 cents/h= dollars/days
    13·2 answers
  • Before agreeing to purchase a large order of polyethylene sheaths for a particular type of high-pressure oil-filled submarine po
    10·1 answer
  • please help Students are designing a new town as part of a social studies project on urban planning. they want to place the town
    11·1 answer
  • 16 − 3k + 4k − 14 solve
    14·2 answers
  • I need help solving this equation does anybody know what x is? 5+x+(-2)=-8
    14·2 answers
  • Which of the following is not a true statement?
    8·1 answer
  • Translate the sentence into an equation.
    13·1 answer
  • Nate went camping with his family. They left their house at 4:20 P.M. It took 1 hour and 15 minutes to drive to the campground.
    13·1 answer
  • Write an equation using x when the sum of a number and 8 is multiplied by 3and the answer is 6
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!