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hichkok12 [17]
3 years ago
13

How many Solutions are there for -6(3x+2)=2x-5-20x-7

Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

First of all, expand the left hand side:

-18x-12 = 2x-5-20x-7

Sum like terms on the right hand side:

-18x-12 = -18x-12

As you can see, the equation turned to be an identity: it doesn't matter which value for x you are choosing: you're evaluating the same expression in both sides, so they will always be the same.

In other words, you're asking: which value for x should I choose so that -18x-12 and -18x-12 evaluate to the same number? Well, obvisouly any value for x will do.

So, there are infinitely many solutions to this equation, namely ever real number is a solution of this equation.

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12.5%

Step-by-step explanation:

Five divided by 40 is 12.5

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The number of gift baskets Penelope can make varies directly with the amount of time she spends making the baskets.
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Explain the difference between gross income and net income
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3 0
3 years ago
The graph of a function f is given. Use the graph to estimate the following. (Enter your answers using interval notation.)
kirill [66]

Using the graph and function concepts, it is found that:

a) The domain is [-5,4], while the range is [-2,-5]

b) The function is increasing in [0,1] and [2,3], and decreasing [-5,0], [1,2], and [3,4].

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

  • The domain of a function is given by it's input values, that is, the values of x, the horizontal axis on the <em>graph</em>.
  • The range of a function is given by it's output values, that is, the values of y, the vertical axis on the <em>graph</em>.
  • If the <em>graph </em>is pointing upwards, the function increases.
  • If the <em>graph </em>is pointing downwards, the function decreases.

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

Item a:

  • On the graph, the x-values are from -5 to 4, thus the domain is: [-5,4]
  • The y-values are from -2 to -5, thus, the range is: [-2,-5]

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

Item b:

  • On the graph, it is pointing upwards on the following intervals, for x-values: From 0 to 1, and from 2 to 3, thus, the function is increasing in [0,1] and [2,3].
  • On the other intervals,  [-5,0], [1,2], and [3,4], the function is decreasing.

A similar problem is given at brainly.com/question/10891721

6 0
3 years ago
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