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
murzikaleks [220]
3 years ago
6

Explain: What is the solution to this system of equations? 2x+y=20 6x-5y=12

Mathematics
1 answer:
bazaltina [42]3 years ago
3 0

Answer:

solution set is (x,y) = (7,6)

Step-by-step explanation:

solving by substitution method

2x +y=20--------------1

6x-5y=12---------------2

from equation 1, solve for y

2x+y=20

y= 20-2x------equation 3

adding value of y in equation 2

6x-5y=12

6x-5(20-2x)=12

6x-100+10x=12

16x= 12+100

16x= 112

x= 112/16

x=7

adding value of x in equation 3

y= 20-2x

y= 20- 2(7)

y=20-14

y=6

so solution set (x,y) = (7,6)

You might be interested in
How do you write 4 hundredths,3 tenths, and 6 ones as a decimal?
Vsevolod [243]
The answer should be 6.34. This is because since the 6 is in the ones place, it should be the whole number. The 3 is a tenths so it should be the first number after the decimal. Finally, since 4 is in the hundredths place, it should be two places from the whole number.
5 0
3 years ago
Read 2 more answers
Write an equation of the circle with center (-7,4) and radius 11.
olga_2 [115]

Answer: (x+7)^2 + (y-4)^2 = 121  or  (x+7)^2 + (y-4)^2 = 11^2

Step-by-step explanation:

Equation of the circle is:

(x-h)^2+(y-k)^2=r^2 , which is the center (h,k) and the radius r^2

-Place the center (-7,4) and radius 11 onto that equation:

(x+7)^2+(y-4)^2=121 (if simplified radius needed)

or

(x+7)^2(y-4)^2=11^2

7 0
3 years ago
Read 2 more answers
On a particular Saturday, 60% of the visitors to an art museum were students. If 144 students visited the museum, how many total
pentagon [3]
Hello! To solve this question, we can write and solve a proportion. Because we are looking for the whole, which is the total amount of visitors on a Saturday, set the proportion up like this: 144/x = 60/100. This is because we are looking for the total amount of visitors, and we know that 144 is 60% of x number of visitors. Cross multiply the values in order to get 14,400 = 60x. Now, divide each side by 60 to isolate the "x". 14,400/60 is 240. x = 240. The art museum had 240 visitors that Saturday.
5 0
3 years ago
Read 2 more answers
In 1948, 5 people bought 66 acres of land for $124.00 per acre, In 1967, the same 66 acres was sold and bought for $15,787.25 pe
Shalnov [3]

Answer:

Price decresed to 124.00

Step-by-step explanation:

4 0
3 years ago
Evaluate the expression xy for x= 6 and y=5
GarryVolchara [31]
The answer would be 30
6 0
3 years ago
Read 2 more answers
Other questions:
  • A six-foot-tall person is standing next to a flagpole. The person is casting a shadow 1 1/2 feet in length, while the flagpole i
    8·1 answer
  • Please help me with parts A, B, and C.
    14·1 answer
  • !!!!!HELP!!!!! 25 POINTS!!!
    7·2 answers
  • What is 10.6 as a fraction
    8·1 answer
  • Suppose a simple random sample of size 50 is selected from a population with σ=10σ=10. Find the value of the standard error of t
    14·1 answer
  • If the input is o, what is the output?
    9·1 answer
  • Max used 3 7/8 pounds of yellow potatoes and 2 5/8 pounds of sweet potatoes to make a potato salad. How many more pounds of yell
    14·2 answers
  • Hi how to do quetion3?​
    8·1 answer
  • I need help please can’t find it
    6·1 answer
  • Solve number 11 pls
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!