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
wel
3 years ago
6

-5x - 2y = 13 -4x + y = 0 Solve by substation

Mathematics
1 answer:
kotegsom [21]3 years ago
5 0

Answer:

(x,y)=(-1,-4)

Step-by-step explanation:

-4x + y = 0

+4x         +4x

y=4x

-5x - 2y = 13

+5x          +5x

-2y = 5x+13

-2(4x) = 5x+13

-8x=5x+13

-5x -5x

-13x/-13=13/-13

x=-1

Thus:

y=4x

y=4(-1)

y=-4

You might be interested in
In 2000, the population of a county was 25,300,987. The population decreased at a rate of 2% each year. What was the population
EastWind [94]

Answer: In 2008 the population was 21,525,144

Step-by-step explanation:

You need to use the following formula for Exponential decay:

P=P_0(1-r)^t

Where P_0 is the initial population in the year 0, r is the rate of decay and t is the time.

In this case, you can identify that:

P_0=25,300,987\\\\r=2\%\\\\t=8

Therefore, substituting these values into the formula for Exponential decay, you get:

P=P_0(1-r)^t\\\\P=(25,300,987)(1-\frac{2}{100})^8\\\\P=21,525,144

Then, in 2008 the population was 21,525,144

6 0
3 years ago
Candice bought 6 dozen eggs and broke 9 eggs how many eggs did she have left
Nadya [2.5K]

Answer:

63

Step-by-step explanation:

12x6=72

72-9=63

the answer is 63

3 0
2 years ago
Read 2 more answers
Need help on this thanks
Mars2501 [29]

Answer:

8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How many hours is 10 percent of 24 hours
Ne4ueva [31]
It is 2.4 hours I hope this helped! :)
5 0
2 years ago
Read 2 more answers
2.
alukav5142 [94]

The area of the rectangular garden given the length and width is 16 1/2 square feet

<h3> Area of the garden</h3><h3 />
  • Length = 5 1/2 feet
  • Width = 3 feet

Area of a rectangular garden = length × width

= 5 1/2 feet × 3 feet

= 11/2 × 3

= 33/2

= 16 1/2 square feet

Learn more about area:

brainly.com/question/8409681

#SPJ1

5 0
1 year ago
Other questions:
  • Identify a possible first step using the elimination method to solve the system and then find the solution to the system. 3x - 5
    7·2 answers
  • PLZ HELP ME!!!!!! ASAP!! PLZ EXPLAIN YOUR ANSWERS THOROUGHLY!! giving 20 points
    14·1 answer
  • Need help...with this graph
    8·1 answer
  • How do you answer this math question? #7 btw
    11·1 answer
  • 2 2/13 into a decimal
    5·2 answers
  • If the square root of p2 is an integer greater than 1, which of the following must be true? I. p2 has an odd number of positive
    5·1 answer
  • My drawing!!!!!!<br><br><br><br><br><br> Do you like it??????
    13·2 answers
  • These polygons are similar. Find the missing side length.<br><br> Can you guys help?
    10·1 answer
  • What is the value of 3x^2– 7x + 9 when x = 4?
    5·1 answer
  • The residents of a city voted on whether to raise property taxes. The ratio of yes to no votes was 7 to 5. If there were 4115 no
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!