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
Alekssandra [29.7K]
3 years ago
13

What is the solution to the system of equation -7x-2y=-13 X-2y=11 Using substitution

Mathematics
1 answer:
Gnom [1K]3 years ago
8 0
        -7x - 2y = -13
-7x + 7x - 2y = 7x - 13
               -2y = 7x - 13
                -2         -2
                 y = -3.5x + 6.5

                      x - 2y = 11
    x - 2(-3.5x + 6.5) = 11
x - 2(-3.5x) - 2(6.5) = 11
             x + 7x - 13 = 11
                   8x - 13 = 11
                       + 13 + 13
                          8x = 24
                           8      8
                            x = 3

y = -3.5x + 6.5
y = -3.5(3) + 6.5
y = -10.5 + 6.5
y = -4
(x, y) = (3, -4)
You might be interested in
Which number is 5 more than 2? Which number is 4 less than -3? PLS HELP ME ILL GIVE YOU BRAINLIST
vaieri [72.5K]

5+2=7 4- -3= -7 hdkb sus heyitsme

6 0
3 years ago
Read 2 more answers
Draw the graph of y = 6 - 2x on the grid
igomit [66]

Answer:

See attached image for the requested graph

Step-by-step explanation:

The values completed in the table and text boxes as shown, are all correct.

For the plotting of the points and drawing of the line, please see the attached image.

8 0
2 years ago
When x is divided by 5 the remainder is 4 and when x is divided by 9 the remainder is 0 what is x?
Marrrta [24]
The number could be any multiple of nine that ends in 4 or 9, like 9, 54, 99, 144, etc.
5 0
3 years ago
How do you write 3 3/5 as a percent?
elena-s [515]
So first convert it it a mixed number so you get 18/10 next multiply by 100 to get 180%
7 0
3 years ago
Read 2 more answers
Giving brainliest!!
slamgirl [31]

Answer:

Gah! Inverses!

Step-by-step explanation:

This is a pretty simple concept, just switch the x and f(x) values!

If you don't understand, look at how I solve it!

f(x)=\frac{1}{3} -\frac{1}{21} x

Switching the positions of the x and f(x) values...

x=\frac{1}{3} -\frac{1}{21} f(x)^{-1}\\

Note: That f(x)^-1 is the proper notation for inverse functions.

x-\frac{1}{3} =-\frac{1}{21} f(x)^{-1} \\f(x)^{-1}=-21x+7

There you go!

Hope this helps, and don't procrastinate!

7 0
3 years ago
Other questions:
  • Gap sells jeans that cost $21.00 for a selling price of $29.95. The percent of markup based on cost is:
    13·1 answer
  • Parents wish to have $160,000 available for a​ child's education. If the child is now
    13·1 answer
  • What is the area of the shaded region?​
    10·1 answer
  • Rene is going to the lake to visit some friends. If the lake is 60 miles away and Rene is driving at 40 miles per hour the entir
    5·1 answer
  • Convert 0.9375 to a fraction
    9·1 answer
  • You move left 1 unit and up 1 units, you end at (4,-2) where did u start?
    11·2 answers
  • What is something definitely true about the value x ?
    8·2 answers
  • Consider all rectangles with an area of 200m^2. Let x be the length of one side of such a rectangle. Find the dimensions of a re
    7·1 answer
  • Which shows the following expression after the negative exponents have been eliminated?
    14·1 answer
  • Simplify: 18 - ⎷81 + 9 · 3⁴ - (3 - 2 + 9) ÷ 2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!