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
miskamm [114]
3 years ago
5

3x+y=4 x+2y=-2 what is the answer

Mathematics
1 answer:
Taya2010 [7]3 years ago
3 0

Answer:

2(3x+y=4)

1(x+2y=-2)

6x+2y=8

<u>(-) x+2y=-2</u>

<u>5x=10</u>

5

x=2

x+2y=-1

2+2y=-1

<u>-</u><u>2</u><u> -</u><u>2</u>

<u>2y=-</u><u>3</u>

2

y=-3/2

Step-by-step explanation:

  1. multiply the first equation by 2 to make y equal to each other.
  2. subtract to eliminate y
  3. divide by 5 to get x
  4. take one of the equations
  5. replace x by 2 to solve for y
You might be interested in
Name the ordered pairs for the vertices on the figure below
Elanso [62]

Answer:

where is the figure?

Step-by-step explanation:

4 0
3 years ago
WILL MARK BRAINLIEST!!!!!! 25 PTS
LuckyWell [14K]

Answer:

no

Step-by-step explanation:

SAS stands for side angle side. so in this question we know that one side is equal to another side, but we don't know wether or not there is another angle and another side that is congruent. so for that reason it is not congruent by SAS.

6 0
3 years ago
Which triangle is similar to ABC
tankabanditka [31]
The triagle which is similar to ABC id DEF. The first option is correct since thwy have the same measurement of its sides
4 0
3 years ago
FInd the value of C.
My name is Ann [436]

Answer:

The side C equals to 10. hence the answer is letter A

Step-by-step explanation:

To solve this, we need to use trigonometric functions.

we know that sin (α) = Lo / H for a triangle. Being Lo : Length of the opposite side and H: Length of the hypotenuse.

Given α= 45º and Lo= 5√2 and replacing in the equation:

sin (45º) = 5√2 / C (1)

Using trigonometric identities we know that sin(45º) =(√2)/2. Replacing in equation (1):

sin (45º) = (√2)/2 = 5√2 / C ⇒ C = 2 *5 *√2 / (√2) ⇒ C=10

6 0
3 years ago
What is the answer to the problem <br><br><img src="https://tex.z-dn.net/?f=%28x%20%7B3%7D%29%5E%7B3%7D%20%3D%20x%5En" id="TexFo
11Alexandr11 [23.1K]
Solve for x:
x^9 = n x

Subtract n x from both sides:
x^9 - n x = 0

Factor x and constant terms from the left hand side:
-x (n - x^8) = 0

Multiply both sides by -1:
x (n - x^8) = 0

Split into two equations:
x = 0 or n - x^8 = 0

Subtract n from both sides:
x = 0 or -x^8 = -n

Multiply both sides by -1:
x = 0 or x^8 = n

Taking 8^th roots gives n^(1/8) times the 8^th roots of unity:
Answer: x = 0 or x = -n^(1/8) or x = -i n^(1/8) or x = i n^(1/8) or x = n^(1/8) or x = -(-1)^(1/4) n^(1/8) or x = (-1)^(1/4) n^(1/8) or x = -(-1)^(3/4) n^(1/8) or x = (-1)^(3/4) n^(1/8)
3 0
3 years ago
Other questions:
  • Drag numbers to the table so it shows a proportional relationship between x and y.
    13·2 answers
  • Find the LCD? P+3/p^2+7p+10 and p/5/p^2+5p+6
    9·1 answer
  • Write a multiplication equation that has a solution of 12. Use tape diagrams to prove that your equation has a solution of 12.
    12·1 answer
  • The state of Utah has a sales tax of 4.75% and the maximum rate a consumer can pay for local sales tax is 8.35%. What is the ran
    14·2 answers
  • Mr. Matthews purchases 22 boxes of pencils for 4th grade classes each box contains 45 pencils how many pencils will each class r
    13·2 answers
  • Is 11/20 greater than a half
    8·2 answers
  • Nine times a number divided by 2 equals 54.
    11·1 answer
  • PLEASE HELP
    8·2 answers
  • Quizizz help 10 pts each brainiest guaranteed WITHH A PIC
    12·1 answer
  • A frying pan has a circumference of 43.96 centimeters What is the radius of the frying pan? Use 3.14 for
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!