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
7nadin3 [17]
3 years ago
15

2x - y = 10

Mathematics
2 answers:
Zolol [24]3 years ago
7 0
You can plug -x - 1 for y in the first equation

2x - (-x - 1) = 10

2x + x + 1 = 10

Combine

3x = 9

Divide

x = 3

Plug 3 for x in any equation ( I'll use th second equation )

y = - (3) - 1

y = - 3 - 1 = -4

x = 3 ; y = -4

(3, -4)
cupoosta [38]3 years ago
7 0
2x - y = 10      .............(a)

y = -x - 1            ...........(b)

Substitute y = - x - 1 into equation (a) 

<span>2x - y = 10
</span>
2x - (-x - 1) = 10

2x + x + 1 = 10

3x + 1 = 10

3x = 10 - 1

3x = 9

x = 9/3 = 3.             x = 3 

Recall, y = -x - 1 = -3 - 1 = -4

Hence solution (x, y) = (3, -4)
You might be interested in
What are three ways to say x&gt;5 in words
SSSSS [86.1K]
1.) x is greater than 5

2.) an unknown number is greater than five

3.) x is greater than five
3 0
3 years ago
Solve for X. Show all work
natta225 [31]

Answer:

About 11.77 centimeters

Step-by-step explanation:

By law of sines:

\dfrac{50}{\sin 62}=\dfrac{x}{\sin 12} \\\\\\x=\dfrac{50}{\sin 62}\cdot \sin 12\approx 11.77cm

Hope this helps!

8 0
3 years ago
art bought 4 boxes of pens but gave his friend ben 8 pens and now has a total of 112 pens how many are in a box? which of the fo
viktelen [127]
There was 30 in each box until he gave 8 away so no there is probably 28 in each box
 

sorry if i am wrong



4X - 8 = 112      

3 0
3 years ago
Read 2 more answers
Y = -(x+5)2 + 9 into standard form
mote1985 [20]

Answer:

y = -2x - 1

Step-by-step explanation:

y = -(x+5)2 + 9

Foil method to get rid of parenthesis

y= -2x - 10 + 9

y = -2x - 1

Have a great day!

(Please mark this question as brainiest if it worked or ask me a question if you do not understand)

4 0
2 years ago
Describe the number of solutions for each system of equations graphed<br> below
abruzzese [7]
The solution of the system of equations means that following:
1- In case we are dealing with system of equations, the solution would be the point of intersection of the two graphs
2- In case we're dealing with only one equation, the solution would be the points of intersection of the graph with the x-axis

Graph (a):
The graph is for a system of equations (two lines). Therefore, the solution would be the point of intersection of the two lines.
From the graph, we can note that there is only one point of intersection between the two lines (-3,-1). Therefore, the system of equations has only one solution

Graph (b):
The graph is for a system of equations (two lines). Therefore, the solution would be the point of intersection of the two lines.
From the graph, we can note that the two lines are parallel. This means that they will never intersect. Therefore, the system of equations has no solutions

Graph (c):
The graph is for a single line. Therefore, the solution(s) would be the point(s) that make the overall equation equal to zero, i.e. point(s) of intersection with the x-axis.
From the graph, we can note that the line intersects with the x-axis only once at point (2,0). This means that the line has only one solution.

Hope this helps :)

5 0
3 years ago
Other questions:
  • bill drove 315 miles in 7 hours, alisha drove 235 miles in hours, and Joanne drove 414 miles in 9 hours. Which person drove at a
    9·2 answers
  • Solve: I 2x +5 I + 6 ≥ 4
    11·1 answer
  • Solve the system by the method of elimination.
    12·2 answers
  • How are 3 thirds and 6 sixths alike?
    13·2 answers
  • A school is painting its logo in the shape of a triangle in the middle of its sports field. The school wants the height of a tri
    8·1 answer
  • Rewrite Linear equation in slope intercept form: 12x-3y=18
    9·1 answer
  • HELPPPP PLEASEEEEE !!! URGENTT
    13·1 answer
  • Look at the map showing the Austria-Hungarian Empire in about 1900.
    14·1 answer
  • Help? I can’t figure out this problem
    12·1 answer
  • the students in Mrs. Aubrey's class brought in 15 cans during week 1 of the food drive. during week 2 the students brought in 4
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!