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
yarga [219]
3 years ago
8

How do I solve 2x-3y=-1 and y=x-1 with substitution?

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0
2x-3y= -1 (label 1)
y=x-1 (label 2)
sub 2 in 1
2x-3(x-1)= -1
2x-3x+3= -1
-x+3= -1
-x=-4
x=4
sub x=4 into 2
y=4-1
y=3

therefore x=4 and y=3 
You might be interested in
The Great Speedster roller coaster runs 3 trains every 10 minutes. At that rate, how many trains does the roller coaster run eve
Natasha2012 [34]
<span>Two cars run at constant speeds around a one-mile racetrack. If the cars circle the track in the same direction, the faster car passes the slower car every 10 minutes. If the cars circle the track in opposite directions, the cars meet every 30 seconds.</span>
6 0
4 years ago
Find the area of a triangle with a base (b) of 7 feet and a height (h) of 12 feet.
siniylev [52]

Answer:


Step-by-step explanation:

Area = 1/2 × base × height

Base(b) = 7 feet

Height(h) = 12 feet

Area = 1/2 × 7 × 12 = 7 × 6 = 42 feet²

6 0
3 years ago
Malcolm has been watching a roulette-style game at a local charity bazaar. The game has only ten numbers on the wheel, and every
Mariana [72]

Answer:

Malcolm is showing evidence of gambler's fallacy.

This is the tendency to think previous results can affect future performance of an event that is fundamentally random.

Step-by-step explanation:

Since each round of the roulette-style game is independent of each other. The probability that 8 will come up at any time remains the same, equal to the probability of each number from 1 to 10 coming up. That it has not come up in the last 15 minutes does not increase or decrease the probability that it would come up afterwards.

5 0
4 years ago
A dog breeder plans to mix two types of food to make a mix of low cost
lys-0071 [83]

Answer:

  • 3.75 bags of ChowChow
  • 0.75 bags of Kibble

Step-by-step explanation:

The constraints on protein, minerals, and vitamins give rise to the inequalities ...

  40c +30k ≥ 150 . . . . . . required protein

  20c +20k ≥ 90 . . . . . . required minerals

  10c +30k ≥ 60 . . . . . . . required vitamins

And we want to minimize 10c +12k.

The graph shows the vertices of the feasible region in (c, k) coordinates. The one that minimizes cost is (c, k) = (3.75, 0.75).

To minimize cost, the daily feed should be ...

  • 3.75 bags of ChowChow
  • 0.75 bags of Kibble

Daily cost will be $46.50.

5 0
3 years ago
How many terms are in the expression<br><br> a3 + 3a2b - 4b - 11b + 7<br><br> 5<br> 6<br> 4<br> 7
Contact [7]

Answer:

there are 5 terms!

Step-by-step explanation:

trust me

6 0
2 years ago
Other questions:
  • Explain how you know which coins could be show 0.77 of a dollar
    15·1 answer
  • Which mathematicians first used the symbol pi Why?
    10·1 answer
  • Find the probability of rolling a three first and then a ten when a pair of dice is rolled twice
    5·1 answer
  • If f(x) = x + 7 and g(x) = 1/x -13, what is the domain of (f O g)(x)
    15·2 answers
  • HELP asap PLEASE!! <br> Match the table to the equation.
    6·1 answer
  • Rectangle MNOP is similar to rectangle WXYZ. Which is the length of segment YZ?
    10·2 answers
  • Use the substitution method to solve the system of equations. Choose the correct ordered pair. y=6x-4 y=7x-7
    10·1 answer
  • which car has better mileage, A 125/5 or B 120/6 please help me I am failing my test because of these problems​
    5·2 answers
  • Compare the graph of y=3(x-3)^2+6 to the graph of y=x^2. Which most accurately describes the translation
    11·1 answer
  • (x² + 6x-5) + (x²-8x-4)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!