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
zhannawk [14.2K]
3 years ago
13

Use substitution to solve for x in the system of equations.

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0
Equation 1) 10x + 2y = 30
Equation 2) 4x + y = 4

Multiply all of equation 2 by 2.

2)  2(4x + y = 4)

2)  8x + 2y = 8
1)  10x + 2y = 30

Subtract equations from each other.

-2x = -22

Divide both sides by -2.

x = -22/-2

x = 11

B) x = 11

~Hope I helped!~


You might be interested in
16. What is the value of 2 1/8x4 3/4
Aneli [31]

Answer:

10/3/32

Step-by-step explanation:

:)))))))))))))))

8 0
2 years ago
Create a word problem that involves speed
lana66690 [7]

A hockey puck is sliding on frictionless ice on an infinite hockey rink.
Its speed is 36 km/hour.  How far does the puck slide in 10 seconds ? 

 (36 km/hr) x (1,000 m/km) x (1 hr/3600 sec) x (10sec) =

         (36 x 1,000 x 10 / 3,600) meters  =  <em>100 meters</em>

What is the puck's speed in miles per hour ?

        (36 km/hr) x (0.6214 mi/km)  =  <em>22.37 mi/hr</em>


6 0
3 years ago
PLSS HELP ME WITH THIS! 20 POINTS
Svetradugi [14.3K]

Answer:

C)

Step-by-step explanation:

Every x is 6 times bigger than y

3 0
1 year ago
Read 2 more answers
What is 630 in simplest radical form?
Anit [1.1K]
3 radical 70. 9 times 70 is 630, 9 squared is 3.
6 0
3 years ago
Select the expression below that is equal to 5(11 - m).
Sunny_sXe [5.5K]

Answer:

C

Step-by-step explanation:

5*11=55

5*-m=-5m

Your welcome

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the measure of RSL?
    5·1 answer
  • jimmy had 8 boxes with 3 cars in each box. if jimmy wanted to give each of his 4 friends an equal number of cars, how many cars
    11·2 answers
  • A person can push a 160 ​-pound sofa across a carpeted floor by pushing with a force of 100 pounds. Find an equation that descri
    6·1 answer
  • Which equation represents an exponential function that passes through the point (2,80)
    8·2 answers
  • I’ll give brainliest to whoever helps me answer this question correctly.
    12·2 answers
  • Find the value of x in similar polygons below
    6·1 answer
  • Please help.<br> Is algebra.
    15·1 answer
  • Please do question 4 and 5 only. <br><br> I will mark brainliest to well explained answers.
    6·1 answer
  • Solve (x-5)^2=3 <br><br> Please help
    8·1 answer
  • Which of the following are solutions to the equation below?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!