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nlexa [21]
1 year ago
7

Piano lessons cost $30 per lesson. Choose the graph that represents the total cost for x number of lessons. ty 150 1501 ofy y 디

120 120 90 90 Total Cost ($) Total Cost ($) O Total Cost ($) 60 60 60 30 30 30 4 1 4 5 4 5 2 3 Lessons 2 3 Lessons 2 Lessons

Mathematics
1 answer:
Angelina_Jolie [31]1 year ago
3 0

Since we are asked for tge graph that represent the total cost for the x numbers of lesson, it will be helpful to illustrate it first this way

for each lesson it will cost $30 dollars

1 lesson $30

2 lessons $60

3 lessons $90

4 lessons $120

5 lessons $150

So from this set of numbers , it is apparent that the grqph in letter c represents the total costs for x numbers of lessonsseethati

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8x + 20y = 20<br> 14x + 35y = k<br> For the above system of equations to be consistent, k must equal
Goshia [24]

Answer:

  35

Step-by-step explanation:

The equations will be "consistent" when they describe lines that are not parallel.

<h3>Slopes</h3>

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These lines have the same slope, so will be parallel unless they have the same y-intercept.

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<em>Additional comment</em>

Linear equations are generally categorized as "consistent" or "inconsistent," and "dependent" or "independent."

Equations are "inconsistent" if there are no values of the variables that satisfy all of the equations. They are "dependent" if they describe exactly the same relation between the variables. "Consistent" equations may be "dependent" (describing the same line, as here), or "independent" (describing lines with different slopes.)

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What two numbers have a product of -2 and a sum of 7
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<em>Greetings from Brasil...</em>

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X + Y = 7       ii

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- 2 + Y² = 7X     <em> rearranging everything</em>

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What is the distributive property to writ 8(x + 1)
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