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
Anna35 [415]
2 years ago
9

Which ordered pair is a solution to the system of equations? A (1,3) B (7, -5) C (8,2) D (-2, -3)

Mathematics
1 answer:
photoshop1234 [79]2 years ago
8 0
2x - y = -1
2x - 4y = 8
-------------------subtract
3y = -9
y = 3

2x - y = -1
2x - 3 =-1
2x = 2
x = 1

solution (1,3)
so answer A

You got it right
You might be interested in
Write and solve an equation to answer the question, "What number aa is 25% of 64?" An equation is __ =0.25* __. The solution is
Leokris [45]

What number aa is 25% of 64? An equation is a=0.25*64. The solution is a=16. Then check.

64 / 16 = 4. So 16 is the solution.
7 0
3 years ago
Talulah is an ecologist who studies the change in the penguin population of Antarctica over time. She
blondinia [14]

Answer:

P(t)  =  27000 - 4*t

Step-by-step explanation:

Over a period of time, if we know the  population at certain time,  and the rate of change of the population, we can express the function describing such population by means of these two parameters  

Then:

P(t)  = P₀ + 4*t

In our case

P(t)  =  27000 - 4*t

Sign minus is for decreasing population t is in months, 4 is the rate of change and finally 27000 was population the first time Talulah counted the population

8 0
3 years ago
PLS HELP TEST ILL GIVE BRAINLIEST
topjm [15]

Answer:

Answer attached

Step-by-step explanation:

With reference to my figure

Shape 1 = square

Shape 2 = rectangle

5 0
3 years ago
The Colosseum in Rome has a total volume of 47 million cubic feet. When it was in use, it was 180 feet tall. Suppose a scale mod
nevsk [136]

Answer:

56 ft

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Alan and Margot each drive from City A to City B, a distance of 147 miles. They take the same route and drive at constant speeds
Westkost [7]

Answer:

Margot gets from A to B faster

Step-by-step explanation:

Alan takes 2 hr and 35 min = 2. 58... hr

Margot takes 147/64 hr = 2.296.. hr

7 0
3 years ago
Other questions:
  • If n= 5.3 cm and p= 6.25cm what is the measure of angle
    8·1 answer
  • There are boys and girls in a class. if the number of girls is multiplied by two and added to the number of boys in the class, t
    6·1 answer
  • 9x-4x<3+-11-2 how to do this
    8·2 answers
  • Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625
    6·1 answer
  • The length, height, and width of a cube are multiplied by 6. What effect does this have on the surface area of the cube?
    12·1 answer
  • Sean has 9 liters of juice. He pours equal amounts of the juice into 4 pitchers. There is 0.5 of a liter of juice left. How many
    9·1 answer
  • Which system of equations is represented by the matrix below?
    7·1 answer
  • Easy math but im confused (sorry) <br>Help with q1 and 2 please ^^​
    12·1 answer
  • PLEASE HELP ME ASAPPP!!​
    6·1 answer
  • Anyone here good at geometry ?!! I need help please!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!