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timofeeve [1]
2 years ago
13

What is the solution to the system of equations? 2x – y = 7 y = 2x + 3

Mathematics
2 answers:
aliya0001 [1]2 years ago
7 0
2nd one, y=2x+3
so subsitute y with 2x+3 in other equation

2x-(2x+3)=7
2x-2x-3=7
0-3=7
-3=7
false
no solution
(also, the slopes of the lines are the same and therefor they are paralell and differnet y intercepts so never intersect)


no solution
Kruka [31]2 years ago
4 0

Answer:  The given system of equations will have NO solution.

Step-by-step explanation:  We are given to find the solution to the following system of linear equations :

2x-y=7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\y=2x+3~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)

We will be solving the given system of equations by the method of SUBSTITUTION.

Substituting the value of y from equation (ii) in equation (i), we get

2x-y=7\\\\\Rightarrow 2x-(2x+3)=7\\\\\Rightarrow 2x-2x-3=7\\\\\Rightarrow -3=7,

which can NEVER be true.

Therefore, the given system of equations will have NO solution.

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FrozenT [24]

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Step-by-step explanation:

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-(x-25)^2+361

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B.  The x-intercepts are the values of x for which f(x) is 0.  This equation can be factored as (-a+6)(a-44)=0, with solutions 6 and 44.  Therefore, by selling either 6 memberships or 44 memberships, the studio breaks even, neither making nor losing money.
4 0
3 years ago
Need Help Asap!! Will Give Brainliest!!
crimeas [40]

Answer:

y=2x-1

Step-by-step explanation:

8 0
3 years ago
1
KonstantinChe [14]
<h2>                     QUESTION # 1</h2>

Answer:

  • Total distance = 21 units (meters)
  • The average speed = 7 meter per second.

Step-by-step explanation:

To Determine:

If the whole run took the bug 3 seconds, what was its average speed?

Information Fetching and Solution Steps:

  • A beetle was running along a number line.
  • The beetle ran from 4 to 25.

Let suppose each unit on a number line represents 1 meter.

As the beetle ran from 4 to 25, so

the distance covered by beetle is:

                                           25 - 4 = 21 units. i.e. 21 meters

As the average speed can be determined by dividing the total distance by the total time, so

The average speed = total distance / total time

as

Total distance = 21 units (meters)

Total time = 3 seconds

so

The average speed = total distance / total time

                                 = 21/3

                                 = 7 meter per second

Therefore, the average speed = 7 meter per second.

                       

<h2>                       QUESTION # 2</h2>

Answer:

  • Total distance = 54 units (meters)
  • The average speed = 6 meter per second.

Step-by-step explanation:

To Determine:

If the whole run took the bug 9 seconds, what was its average speed?

Information Fetching and Solution Steps:

  • A beetle was running along a number line.
  • The beetle ran from 24 to 78.

Let suppose each unit on a number line represents 1 meter.

As the beetle ran from 24 to 78, so

the distance covered by beetle is:

                                         78 - 24 = 54 units. i.e. 54 meters

As the average speed can be determined by dividing the total distance by the total time, so

The average speed = total distance / total time

as

Total distance = 54 units (meters)

Total time = 9 seconds

so

The average speed = total distance / total time

                                 = 54/9

                                 = 6 meter per second

Therefore, the average speed = 6 meter per second.

6 0
3 years ago
A sheet of plastic has an area of 35 square cm. If the sheet is 5 cm thick, what is the volume?
Andre45 [30]

Answer:

175 cm³

Step-by-step explanation:

Volume = área * thick

Volume = 35cm² * 5cn

Volume = 175 cm³

3 0
2 years ago
Read 2 more answers
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