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Lilit [14]
3 years ago
11

Solve each given equation and show your work. Tell whether each question has one solution, an infinite number of solutions, or n

o solutions. Explain your answers. (A) 2x+4(x-1)=2+4x. (B) 25-x=15-(3x+10) (C) 4x=2x+2x+5(x-x)
Mathematics
1 answer:
laiz [17]3 years ago
3 0
2x + 4(x - 1) = 2 + 4x
2x + 4x - 4 = 2 + 4x
6x - 4 = 2 + 4x
6x - 4x = 2 + 4
2x = 6
x = 3........there is 1 solution

25 - x = 15 - (3x + 10)
25 - x = 15 - 3x - 10
25 - x = -3x + 5
3x - x = 5 - 25
2x = - 20
x = -20/2
x = -10.....there is 1 solution

4x = 2x + 2x + 5(x - x)
4x = 4x + 5x - 5x
4x = 4x......this has infinite solutions

learn this...
if ur equation ends in a variable equaling a number, then there is one solution.
if ur equation ends in something not equal, like 2 = 4, or 4 = 6, then there is 0 solutions.
if ur equation ends in something equal to something,(the same) like 2 = 2, or 4x = 4x, then there is infinite solutions

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9 + 10 =<br><br> nine plus ten equals?
8090 [49]

Answer:

19

Step-by-step explanation:

9+10=19

3 0
3 years ago
Solve for x to the nearest tenth!!!!
Sedaia [141]

Answer:

√2685 is your answer

hope this will help you

6 0
2 years ago
According to records in a large hospital, the birth weights of newborns have a symmetric and bell-shaped relative frequency dist
Kamila [148]

Answer:

15.9% of babies are born with birth weight under 6.3 pounds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.8 pounds

Standard Deviation, σ = 0.5

We are given that the distribution of  birth weights is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(birth weight under 6.3 pounds)

P(x < 6.3)

P( x < 6.3) = P( z < \displaystyle\frac{6.3 - 6.8}{0.5}) = P(z < -1)

Calculation the value from standard normal z table, we have,  

P(x < -1) = 0.159 = 15.9\%

15.9% of babies are born with birth weight under 6.3 pounds.

8 0
3 years ago
Write each rational number as a terminating decimal.<br> 1. 19/20<br> 2. -1/8<br> 3. 17/5
Dima020 [189]
19/20= 0.95
-1/8= -0.125
17/5= 3.4
HOPE THIS HELPS!
8 0
4 years ago
Read 2 more answers
23.
guajiro [1.7K]

The correlation coefficient of the data given in the table, using a calculator, is of 0.35

<h3>How to find the correlation coefficient of a data-set using a calculator?</h3>

To find the coefficient, we need to insert the points (x,y) in the calculator.

In this problem, we have that:

  • The values of x are: 90, 95, 80, 84, 75, 80.
  • The values of y are: 80, 90, 90, 95, 75, 85.

Using a calculator, the coefficient is of 0.35.

More can be learned about correlation coefficients at brainly.com/question/25815006

#SPJ1

5 0
2 years ago
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