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
aleksandr82 [10.1K]
3 years ago
12

1. Solve the system of equations by substitution and check your solution.

Mathematics
1 answer:
dedylja [7]3 years ago
6 0

Answer:

x = 7 and y = −2

(7, -2)

Step-by-step explanation:

x = 1 - 3y

3x + 3y = 15

Substitute −3y + 1 for x in 3x + 3y = 15:

3(1 - 3y) + 3y = 15

3 - 9y + 3y = 15

3 - 6y = 15

-3           -3

-6y = 12

/-6     /-6

y = -2

Now we solve for x. Substitute −2 for y in x = −3y + 1:

x = 1 - 3y

x = 1 + (-3)(-2)

x = 1 + 6

x = 7

Now we check our solution.

x = 1 - 3y

7 = 1 + (-3)(-2)

7 = 7 ✅

3x + 3y = 15

3(7) + 3(-2) = 15

21 - 6 = 15

15 = 15 ✅

You might be interested in
PLS HELP ME!! Jdjjssnbshsnsvgzhshsvssu
Ivahew [28]

Answer: The 2 litter bottle holds more

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Determine the number of possible triangles, ABC, that can be formed given A = 150°, a = 7, and b = 4.
GREYUIT [131]
1.

When  you have the length of two sides and the angle between them, the triangle is totally determined. This is, there is only one segment that can complete the triangle: its length and position is totally fixed.


8 0
2 years ago
The center of the basketball court has a diameter of 12 feet. What is the area of the circle
jekas [21]

Answer:36π squared feet

Step-by-step explanation:

Diameter=12

Radius=diameter/2

Radius=12/2

Radius=6 feet

Area of circle=π x Radius x Radius

Area of circle=π x 6 x 6

Area of circle=36π

5 0
3 years ago
How can you prove these triangles are congruent
diamong [38]

Answer:

B

Step-by-step explanation:

Side AB= Side DE

Angle B=90  Angle E=90

Side BC= Side EF

Therefore, they are congruent because of the SAS(Side Angle Side) Postulate.

3 0
3 years ago
Someone fr i,end request me pls
Greeley [361]

Answer:

whaaaat dooooo youuuuu mean dear

5 0
2 years ago
Other questions:
  • What is 100 divided by 21
    13·1 answer
  • Suppose that the number of airplanes arriving at an airport per minute is a Poisson process. The mean number of airplanes arrivi
    12·2 answers
  • What are the domain and range of the function?
    6·2 answers
  • C = 5/9 (F - 32) <br><br> Please help
    14·1 answer
  • Which situation requires the use of the cube root?
    7·1 answer
  • △ABC is similar to △XYZ by the ​ AA Similarity Postulate ​ . The measure of ∠A is 73º and the measure of ∠C is 43º.
    8·1 answer
  • What is the area of a given circle in terms of pi 9.6m
    7·2 answers
  • What is the range of the function?
    13·2 answers
  • Hello, i need some help with #1 ​
    8·2 answers
  • Joanna went school supply shopping. She spent $21.45 on notebooks and pencils. Notebooks cost $1.97 each and pencils cost $1.16
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!