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
storchak [24]
3 years ago
14

Determine the best method to solve the system of equations. Then solve the system.

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer:

x=1  y = -1/2

(1,-1/2)

Step-by-step explanation:

7x-2y=8  

5x+2y=4

I would use elimination since we have 2y in one equation and -2y in the other

7x-2y=8  

5x+2y=4

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

12x = 12

Divide each side by 12

12x/12 = 12/12

x =1

The substitute back into equation 2

5(1) +2y = 4

5 +2y = 4

Subtract 5

5-5+2y = 4-5

2y = -1

Divide by 2

2y/2 = -1/2

y = -1/2

Artist 52 [7]3 years ago
5 0

Answer:

The best method is the elimination method. The solution is (1, -1/2).

Step-by-step explanation:

7x - 2y = 8

5x + 2y = 4

12x = 12

x = 1

7(1) - 2y = 8

7 - 2y = 8

-2y = 1

y = -1/2

Make sure to write the answer in the form of an ordered pair.

Note: Alternative methods are graphing and the substitution method.

You might be interested in
Find the real number root
Hunter-Best [27]

Answer:

No real roots.

Step-by-step explanation:

Unless you guys are dealing with imaginary numbers, you cannot take the square root of a negative.

7 0
2 years ago
A region with a 10-mile radius has a population density of about 1500 people per square mile. Find the number of people who live
riadik2000 [5.3K]

The total population in the region is 942000

<u>Step-by-step explanation:</u>

Radius of the region= 10 miles

Population density= 1500 per square mile

Area of the region = 2π(r x r)

= 2π(10 x 10)

=2(3.14) (100)

= 628 square miles

Population = 1500 x 628

= 942000

The total population in the region is 942000

6 0
3 years ago
Trisha invited 12 friends to her party. Eight of her friends are girls. What is 8 12 in simplest form?
goblinko [34]

Answer:

2/3

Step-by-step explanation:

4 goes into 8 twice and 4 goes into 12 three times therefore it would be 2/3

7 0
3 years ago
Read 2 more answers
Evaluate the following expression. 10−9×5+6×(−2)
Svet_ta [14]
According to the order of operations, evaluate all multiplication first.
10-45+-12

Then add and subtract from left to right
-35-12
-47

Final answer: -47
7 0
2 years ago
YOU MUST FOLLOW THE WORD PROBLEM 5 STEP PROCESS
madreJ [45]

Answer:

$10,100 000,000.006 but it says round to the dollar so it is $10,100 000,000

Step-by-step explanation:

136/100 × $7,426,470,588.24

8 0
2 years ago
Other questions:
  • Equilateral triangle ABC is inscribed in Circle O. Use the diagram to find the following measures.
    14·2 answers
  • What is the value of the letter N
    13·1 answer
  • A ladder rests against a vertical wall at an inclination Alfa to the horizontal. It's foot is pulled away from the wall through
    14·2 answers
  • The formula for the lateral surface area of a cylinder is S=2πrhS=2πrh , where r is the radius of the bases and h is the height.
    7·2 answers
  • Write the equation of a line that is perpendicular to y=3x-2y=3x−2y, equals, 3, x, minus, 2 and that passes through the point (-
    10·2 answers
  • The area in square feet of a rectangular field is x - 70x + 1200. The width, in feet, is x - 30. What is the length, in feet?
    9·1 answer
  • Convert - pint to millilitres.​
    13·2 answers
  • Find y (-3,y) and (1,-7) m=-4
    9·1 answer
  • Arthur has blended coffee worth 95 pesos per kilogram with coffee worth 115 pesos per kilogram to make 50 kilograms of coffee th
    5·1 answer
  • Please help me with this it's algebra WILL GIVE BRAINLIEST and 5 points
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!