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valentinak56 [21]
2 years ago
9

Which equation has no solution?

Mathematics
1 answer:
konstantin123 [22]2 years ago
8 0

Answer:

B) 4x-5-3x=x+5 has no solution.

Step-by-step explanation:

A) 4x+4=4-4x

4x-(-4x)+4=4

4x+4x+4=4

8x+4=4

8x=4-4

8x=0

x=0/8

x=0

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

B) 4x-5-3x=x+5

4x-3x-5=x+5

x-5=x+5

x-x-5=5

-5=5

no solution.

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

C) 4x+15-9x=5x+15

4x-9x+15=5x+15

-5x+15=5x+15

-5x-5x+15=15

-10x+15=15

-10x=15-15

-10x=0

x=0/-10

x=0

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

D) 4x+2-x=4+3x-2

3x+2=3x+4-2

3x+2=3x+2

infinitely many solutions.

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3(x+5) +2x=10x-5(x+1)
posledela

Answer:

no solution

Step-by-step explanation:

3(x+5) +2x=10x-5(x+1)

Distribute

3x+15 +2x = 10x-5x-5

Combine like terms

5x+15 = 5x -5

Subtract 5x from each side

5x-5x+15 = 5x-5x-5

15 = -5

This is never true so there is no solution

6 0
4 years ago
Consider the following portion of an electric circuit with three relays. Current will flow from point a to point b if there is a
Svetradugi [14.3K]

Answer:

0.9009

Step-by-step explanation:

Let X be the event that Current will flow

Let Y be the event that the first relay which is 1 is closed

Thus, we can say that every element of Y is in X, but X possesses more elements. Thus, Y ⊂ X.

Thus, we can say that;

P(X ∩ Y) = P(Y)

Thus, given that current flowed, the probability that relay 1 functioned will be expressed as;

P(Y | X) = (P(Y ∩ X))/P(X)

From earlier, we saw that P(X ∩ Y) = P(Y). Thus;

P(Y | X) = P(Y)/P(X)

From the question, P(Y) = 0.9

Since there are 3 relays, then we have;

P(X) = 1 - 0.1³ = 0.999

Thus;

P(Y | X) = 0.9/0.999

P(Y | X) = 0.9009

4 0
3 years ago
Which graph shows the solution of the system of equations?
katovenus [111]
We’re is the equation
8 0
3 years ago
Estimate 250 to two decimal places.
Ostrovityanka [42]

Answer:

250.00

Step-by-step explanation:

6 0
3 years ago
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Square root of negative 8
Blababa [14]

Answer:

the square root of negative 8 is 64

6 0
3 years ago
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