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
andriy [413]
3 years ago
13

Please help me out :((

Mathematics
1 answer:
olga_2 [115]3 years ago
6 0

Answer:

1) 5*x + 6 = 2 + 3*x

5*x - 3*x = 2 - 6

(5 - 3)*x = -4

2*x = - 4

x = -4/2 = -2

x = -2

We have only one solution.

2) 2*(6 - 2*y) = -1*(4*y - 9)

12 - 4*y = -4*y + 9

12 - 9 = -4*y + 4*y = 0

3 = 0

This is absurd, so this equation has no solution.

3) 2*z - 6 = 2*(z + 2) - 10

2*z - 6 = 2*z + 4 - 10

2*z - 6 = 2*z - 6

Here we have the exact same thing on both sides of the equation, then we have infinite solutions, this happens because z can take any value, and the equation will be true always.

4) We want to have no solutions, so we need to end with something like:

1 = 6

so, we start with:

5*x + 1 = 5*x + A

We want to find the value of A.

First, we can subtract 5*x in both sides, so we get:

1 = A

Now we just need to take A different than 1, for example, if A  = 2, then:

1 = 2

In this case the equation has no solutions, then we have:

5*x + 1 = 5*x + 2

5) We want to have one solution:

3*x - 3 = A*x + 11

We want to end with something like x = k

Let's solve the equation for x:

3*x - 3 = A*x + 11

3*x - A*x = 11 + 3

(3 - A)*x = 14

if we take A = 2, then:

(3 - 2)*x = 14

x = 14

So this equation has only one solution, the equation is:

3*x - 3 = 2*x + 11

6) We want to have infinitely many solutions, then we need to have the same thing on both sides, then we need to have an equation like:

8*x - 7 = 8*x - 7

You might be interested in
Help please I really need help and thank you :))))​
77julia77 [94]

Answer:

14) x = 30°

15) x = 50°

Step-by-step explanation:

14) 60 + x = 90

     x = 90 - 60

     x = 30°

15) 130 + x = 180

     x = 180 - 130

     x = 50°

Hope this helps

3 0
2 years ago
Read 2 more answers
Please please come help me please
tatiyna
2/10 x 2/10 = 4/10 that can be a expression sorry if im wrong
7 0
3 years ago
Read 2 more answers
Please need help asap!!
NNADVOKAT [17]
The answer is false, they are parallel not perpendicular
5 0
3 years ago
Write x = 1/4 y + 2 in slope intercept form.
kondor19780726 [428]

Answer:

y = 4x - 8

Step-by-step explanation:

x = 1/4y + 2

-1/4y   -1/4y

-1/4y + x = 2

-x              -x

-1/4y= -x + 2

*-4        *-4

y = 4x - 8

5 0
3 years ago
Read 2 more answers
Keisha has completed 72 math problems in her SHSAT practice workbook. This is 24% of the total number of math problems in the wo
goldenfox [79]

Answer:

300

Step-by-step explanation:

Just because it makes sense.

8 0
2 years ago
Other questions:
  • (2pm^-1q^0)^-4 • 2m ^-1 p^3 / 2pq^2
    5·1 answer
  • Water weighs about 62 pounds per cubic foot. What is the weight of the water in the pond in problem before?
    9·1 answer
  • What is 25 percent of 32?
    7·1 answer
  • A rectangle has length (3x-8) and width (2x-7) cm .Write down and simplify an expression for the perimeter of the rectangle. So
    10·1 answer
  • HELP PLEASE!!!! THIS IS DUE IN LESS THAN AN HOUR!!!!!! Brainliest and 50 points for whoever can tell me the answer and what I di
    14·1 answer
  • Simplify fractions<br> 3\10<br> 1/8
    12·2 answers
  • What type of line would the equation<br> y &lt; 7x + 8 have?<br> A dashed line or<br> A solid line?
    10·1 answer
  • There is a 6.5% tax on a $750 refrigerator. How much is paid<br> altogether for the refrigerator?
    12·1 answer
  • Which equation represents a line which is perpendicular to the line 4x-y=-2
    9·1 answer
  • PLEASE AWNSER SOON IT'S DUE IN 10 MIN!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!