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
Ivan
3 years ago
9

Need these in 10 mins: Solve by substitutions 1) X+Y=6 3x+2y=15 2 2x+Y=20 3) 6x-SY=r

Mathematics
1 answer:
Mrrafil [7]3 years ago
4 0
3 is the answer just had this on my quiz
You might be interested in
Solve the system of equations.
guajiro [1.7K]

Answer:

Option 2: (1, 0) and (0, -5)

Step-by-step explanation:

Let's solve this system of equations using the elimination method.

Start by labelling the two equations.

5x -y= 5 -----(1)

5x² -y= 5 -----(2)

(2) -(1):

5x² -y -(5x -y)= 5 -5

Expand:

5x² -y -5x +y= 0

5x² -5x= 0

Factorise:

5x(x -1)= 0

5x= 0 or x -1= 0

x= 0 or x= 1

Now that we have found the x values, we can substitute them into either equations to solve for y.

Substitute into (1):

5(0) -y= 5 or 5(1) -y= 5

0 -y= 5 or -y= 5 -5

y= -5 or -y= 0

y= 0

Thus, the solutions are (0, -5) and (1, 0).

3 0
2 years ago
Jose invested $5000 into a fund with an interest rate of 4.8%.
Minchanka [31]
$5000 × 0.048×2= $480

Answer: $480
3 0
3 years ago
If the maker of the promissory note fails to pay the note on the due date,the note is said to be
Svetlanka [38]

Answer:

When the maker of a promissory note fails to pay, the note is said to be <u>dishonored.</u>

Step-by-step explanation:

5 0
2 years ago
The coffee pub has cans of coffee that weigh 4 4/5 pounds each. The pub has 8 1/2 cans of coffee left. What is the total weight?
tankabanditka [31]
4.8 x 8.5 =  40.8 lbs total 
quick mafs
6 0
3 years ago
Sara is making a key chain using the bead design shown. What fraction of the beads in her design are either blue or red? 
klio [65]
You can make a ratio of red to overall colors and then that will give you the fraction, you might have to simplify it
4 0
3 years ago
Other questions:
  • twelve less than four times some number n is at least three more than the number. What values are possible for n?
    12·1 answer
  • 1. (2 points) Solve each equation and write the answer on the line
    11·1 answer
  • Jamie got a new part-time job. The company offers him a salary of $300 per
    6·1 answer
  • Please help me with this :)
    13·1 answer
  • Problem Page
    10·1 answer
  • What does 18+4(m-3)+4m equal
    15·2 answers
  • Find the value of k so that the lines through the given points are parallel.
    11·1 answer
  • Which equation gives the number of quarter inches that are in 23 inch? a) 23 ÷ 14 = 212 b)23 ÷ 14 = 83 c)14 ÷ 23 = 38 d)14 ÷ 23
    9·1 answer
  • What is the distance between these two points? (2,7) &amp; (3,8)
    8·2 answers
  • Find the probability that when a couple has five children, at least one of them is a boy. (assume that boys and girls are equall
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!