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
dangina [55]
3 years ago
12

PLEASE HELP FAST! Solve for Y in the following system of equations!

Mathematics
1 answer:
victus00 [196]3 years ago
7 0

Answer:

B.) 3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

x - y = -1

3x + 5y = 21

<u>Step 2: Rewrite Systems</u>

x - y = -1

  1. Add <em>y</em> to both sides:                    x = y - 1

<u>Step 3: Redefine Systems</u>

x = y - 1

3x + 5y = 21

<u>Step 4: Solve for </u><em><u>y</u></em>

<em>Substitution</em>

  1. Substitute in <em>x</em>:                              3(y - 1) + 5y = 21
  2. Distribute 3:                                   3y - 3 + 5y = 21
  3. Combine like terms:                     8y - 3 = 21
  4. Add 3 to both sides:                     8y = 24
  5. Divide 8 on both sides:                y = 3
You might be interested in
(A) Write an equation for the line that contains (2, -6) and is parallel to y = 3x + 9.
UkoKoshka [18]
Hey!
Here’s the answer and set up for A
First you need to find the slope. Since the line is parallel to 3x+9. The slope will be the same so the slope will be 3. Next you need to put it in point slope and switch the sign so if it’s positive it’s going to be negative
This is what it will look like using point slope formula
(y+6)=3(X-2)
Then you will distribute the 3
(Y+6)=3x-6
Finally you will subtract the 6 from the left side so
Y=3x-12 will be your line. Now just do the same thing to B!
Hope this helped!!
8 0
3 years ago
Which could be the name of of a point?<br> A.)1<br> B.)M<br> C.)t<br> D.)m
pishuonlain [190]
B.)M is the correct answer I thons , because mostly we use capital letters for naming points.
5 0
4 years ago
Let w =Vector O R where O(–5, 6) and R(4, –2). What is the component form of One-fifthw?
Anna71 [15]

Answer:

C) (1.8, -1.6)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Mrs.liamson places 16 gift baskets on a shelf in her store. One-fourth of the gift baskets have pink tennis balls in them
Harman [31]

Answer:

4

Step-by-step explanation:

16/4=4

8 0
3 years ago
Plz help ill mark u brainliest
lana [24]

Answer:

1/6

Step-by-step explanation:

P(3) = number of three's  / total number of outcomes

      = 1/6

3 0
3 years ago
Other questions:
  • What is the image of point (-7, 7) for mapping (x, y), (x- 1, x+ 6)
    7·1 answer
  • Help me please 25 points
    13·1 answer
  • I dont get it like help me
    10·2 answers
  • Subtract - 2x – 10 from 10x2 + 3.
    10·1 answer
  • If you add the digits in a number, how many numbers between 0 and 10,000 will have a sum of 10? (For example, 334 is one such nu
    7·1 answer
  • Jake rides his bicycle 6 miles in 3/5
    13·1 answer
  • I need to calculate J and don’t know how please help me
    13·1 answer
  • HELP ASAP PLEASE!!!!
    5·1 answer
  • What is the missing value in the image above? *
    12·1 answer
  • Hey can yall please help me
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!