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
Burka [1]
3 years ago
7

solve the following system of equations.express your answer as an ordered pair in the format (a,b) with no spaces the number or

symbols 2x+5y=16 -5x-2y=2
Mathematics
1 answer:
NeTakaya3 years ago
5 0

Answer:

The solution is (-2,4)

Step-by-step explanation:

We'll solve the system

2x+5y=16

-5x-2y=2

using elimination by addition and subtraction.

Let's eliminate x first.  To do this, multiply the first equation by 5 and multiply the second equation by 2.  We get:

10x + 25y = 80

-10x  -  4y   = 4

----------------------

          21y = 84.  Thus, y = 84/21 = 4.

Subbing 4 for y in the second equation, we get

-5x -2(4) = 2, or

   -8 - 2 = 5x, or

     -10  = 5x.  Thus, x = -10/5 = -2.

The solution is (-2,4)

You might be interested in
The function m(x)=30x represents the number of total minutes, m(x), that a student goes to extra help sessions, x. Erik wants to
jarptica [38.1K]

Answer:

900 minutes

Step-by-step explanation:

Given the function :

m(x) = 30x

m(x) ; function which represents number of total minutes ;

x = extra lesson session

If Eric goes for extra lesson session 2 times per week for. 10 weeks

Number of extra lesson sessions, x : (2 * 10) = 20 extra lesson sessions

Total Number of minutes :

m(x) = 30x

m(30) = 30(30)

= 900 minutes

6 0
4 years ago
Shannonopens a savings account with $50. Each week after that she deposits $8 into her account. How many weeks does it take her
aliya0001 [1]

Answer:56.25

Step-by-step explanation: 450 divided by 8

6 0
3 years ago
Read 2 more answers
I need help..........
Ksenya-84 [330]
I'm sorry, I don't see the question. Could you please retake the photo in better quality so I could answer it? Thanks!
7 0
3 years ago
The graph below shows the distance, y, in feet, of a mouse from its hole, for a certain amount of time, x, in minutes:
Kobotan [32]
Based on the graph, what is the initial value of the graph and what does it represent <span>0.23 foot; it represents the original distance of the mouse from its hole</span>
5 0
4 years ago
Read 2 more answers
Using suitable identity find the value of
Nostrana [21]
   (42)^3 -(24)^3 - (18)^3
= (74,088)-(13,824)-(5,832)
= 54,432
4 0
3 years ago
Other questions:
  • Which expression is equivalent to −10+(−40)+(−90) ?
    15·3 answers
  • Can someone help me with this question????
    7·1 answer
  • Which of the following is the greatest *<br> -6*10<br> O<br> -6 - (-10)<br> -6 - 10<br> -6 + -10
    9·1 answer
  • Which equation has the solution x=12 ?
    6·2 answers
  • FREE 100 POINTS! I GIVE BRAINLIEST TO WHO ANSWERS FIRST.<br> solve 1 + 1 pls
    15·2 answers
  • jontae went to brunch with his family and offered to pay the bill.The total bill was $54.19 before tax. If there is a 15% how mu
    6·1 answer
  • Developmental norms are used as a benchmark to determine where one should be developmentally. Please select the best answer from
    8·2 answers
  • Please help me with math
    5·1 answer
  • ` 10,800 for 3 years at 121 2% per annum compounded annually.​
    5·1 answer
  • Which of the following is the domain and range of the ellipse with equation 4x2 + 25y2 – 8x + 100y + 4 = 0?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!