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
Yanka [14]
3 years ago
14

What is the first step in solving this system of equations by elimination?

Mathematics
1 answer:
noname [10]3 years ago
6 0

Answer:

B. Add the two equations.

Step-by-step explanation:

Lets solve our system of equations step-by-step

Step 1. Add the two equations

2x – 2y = 5 +

5x + 2y = 9

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

7x         = 14

Step 2. Solve for x in the resulting equation

7x = 14

x=\frac{14}{7}

x = 2

Step 3. Replace the value of x in any of the original equations

2x – 2y = 5

2(2) – 2y = 5

4 – 2y = 5

-2y = 5 - 4

-2y = 1

y=-\frac{1}{2}

We can conclude that the correct answer is: B. Add the two equations.

You might be interested in
The domain of a function is? When it includes all real numbers
Ray Of Light [21]
Domain is x values... Y is y values

6 0
3 years ago
What is the volume of a cylinder with the base radius of 10 units and a height of nine units?
Otrada [13]

Answer:

V = 2827.43\ units^3  or V = 900\pi\ units^3

Step-by-step explanation:

The volume of a cylinder is calculated by the following formula

V = \pi r^2 *h

Where r is the radius of the cylinder and h is the height

In this case we know that the radius r of the base is:

r=10\ units

and

h=9\ units

So the Volume is:

V = \pi (10)^2 *9

V = 900\pi\ units^3

V = 2827.43\ units^3

7 0
3 years ago
Read 2 more answers
Name the different types of proofs you saw in this lesson. Give a description for each.
seraphim [82]

Answer:

?

Step-by-step explanation:

4 0
3 years ago
What is the value of this expression 6 • [(32 - 8) divided by 4 + 2]
zalisa [80]

Answer:

48 is your answer.

Step-by-step explanation:

What you want to do is follow PEMDAS.

Parenthesis are first. You will subtract 32 and 8 to get 24.

6 x [(24)/4+2] You will then divide 24 and 4 to get 6.

6 x[6+2] you will then add 6+2 to get 8.

6 x 8 = 48 is your answer.

7 0
3 years ago
Henrietta buys twelve pounds of bananas and ten pounds of apples for $ 12 . Gustavo buys eight pounds of bananas and five pounds
Olegator [25]

Answer:

The price per pound of bananas is $0.5 and the price per pound of apples is $0.6

Step-by-step explanation:

Let

x -----> the price per pound of bananas

y -----> the price per pound of apples

we know that

12x+10y=12 -----> equation A

8x+5y=7 ----> equation B

Solve the system of equations by graphing

Remember that the solution is the intersection point both graphs

The intersection point is (0.5,0.6)

see the attached figure

therefore

The price per pound of bananas is $0.5

The price per pound of apples is $0.6

4 0
3 years ago
Other questions:
  • Factorize x3 + 13x2 + 32x + 20
    14·1 answer
  • Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain.
    8·1 answer
  • Ken’s predicted temperature for April is 7ºC. His prediction for May is 2ºC higher than April. He used the number line to solve
    8·2 answers
  • Whats the cube root of 234
    13·2 answers
  • A punch recipe requires 2 cups of cranberry juice to make 3 gallons of punch. Using the same recipe, what is the amount of cranb
    11·1 answer
  • Andres tiene una colección de sellos que puede agrupar de 12 en 12, de 16 en 16 y de 18 en 18 sin que sobre ninguno.¿Cuál es el
    11·1 answer
  • PLEASE PLEASE HELP!!!! THANK YOU
    9·1 answer
  • use the matrix tool to solve the system of equations enter the answer as an ordered pair. 8x+5y=9 -x+y=7
    14·1 answer
  • Solve this to be my best friend
    14·1 answer
  • the number of steps per day is said to be related to fitness level (as measured with vo2 testing). which type of validity is des
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!