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
umka2103 [35]
3 years ago
8

X = 3y - 6 2x - 4y = 8 Solve the system of equations using substitution.

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0
Equation 1)  x = 3y - 6
Equation 2)  2x - 4y = 8

Subtract 3y from both sides of the first equation.

1)  x - 3y = -6

Then, multiply all of the first equation by 2.

1)  2(x - 3y = -6)

1)  2x - 6y = -12
2)  2x - 4y = 8

Subtract equations.

-2y = -20

Divide both sides by -2.

y = 10

Plug in 10 for y in the first equation.

x = 3y - 6

x = 3(10) - 6

x = 30 - 6

x = -24

(10,24)

~Hope I helped!~
Brut [27]3 years ago
7 0
Hello

x = 3y - 6
2x - 4y = 8
We need to start by solving 3y - 6 for x
Substitute 3y -6 for x in 2x
2x - 4y = 8
2(3y - 6) - 4y = 8
2y - 12 = 8
2y = 8 + 12
2y = 20
Divide both sides by 2
2y/2 = 20/2
y = 10

Now, substitute 10 for y in x= 3y
x = 3y - 6
x = 3(10) - 6
x = 30 - 6
x= 24

Answer : x = 24 and y=10

I hope this help!
You might be interested in
Mia spins the spinner two times. what is the probability that the arrow will land on 2 both times
kolezko [41]

Answer

how many sides are there to the spinner?

Step-by-step explanation:

i need to knowhow many there are in order to give you a probibility

4 0
3 years ago
The sum of 15 and Rhonda's age is 62.
ycow [4]

Answer:

I guess the que is wrong

........

4 0
2 years ago
Read 2 more answers
Four horses are pulling a wagon. Each horse drinks 45000 ml of water each day. How many liters of water will the horses drink in
s2008m [1.1K]

45000 x 4 = 180,000

180,000 * 5 = 900,000 ml in 5 days

1 liter = 1000 ml

900,000 / 1000 = 900 liters of water

3 0
3 years ago
Question 101 3.1 What is the constant difference between the consecutive terms? < 612,18.24 e 7.14.21.28​
rewona [7]

Answer:

The constant between two consecutive terms is called the common difference. The common difference is the number added to any one term of an arithmetic sequence that generates the subsequent term.

6 0
3 years ago
a tree casts a shadow 8 feet long. A 6-foot Man cast a shadow 4 feet long. The triangle formed by the tree and its shadow is sim
Elden [556K]

Answer:

12 feet

Step-by-step explanation:

Draw a diagram (see picture below). The tree and its shadow is one triangle, the man and its shadow is another triangle. We assume both are right triangles because people and trees stand vertical.

Create a proportion to solve. Put the missing value in a numerator.

Tree height / Tree shadow = Man height / Man shadow

\frac{x}{8} =\frac{6}{4}

Solve using cross multiplication. Multiply x by 4. Multiply 6 by 8.

4x = 48    Divide both sides by 4 to isolate x.

x = 12       Height of tree

The tree is 12 feet tall.

4 0
3 years ago
Other questions:
  • The length of a park is 2/5 miles and the area is 9/10 square miles. What is the width of the park?
    7·1 answer
  • What is the upper quartile in the box plot
    13·2 answers
  • PLZZ HELP
    12·2 answers
  • PLZZZ HELP I'LL GIVE U A MEDAL N FAN U!!!
    13·2 answers
  • What is thebsum of the geometric series if the first term is -11, the last term is 859375 and common ratio is -5?
    11·1 answer
  • Ava has 55 quarts of potting mix. She uses 1 of the potting mix in the wall planter on her
    7·2 answers
  • What is the area of the trapezoid to the nearest tenth? <br> PICTURE BELOW ⬇⬇⬇⬇
    14·1 answer
  • 15 POINTS
    6·1 answer
  • A mass oscillating up and down on the bottom of a spring (assuming perfect elasticity and no friction or air resistance) can be
    9·1 answer
  • PLS HELP ME!!?!?!?!? Ok so Steve had a $6.00 coupon to the school store. Steve used his coupor Each notebook cost the same amoun
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!