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dlinn [17]
2 years ago
14

Jaleel wrote a book. He wants to print some copies for his friends and family. The printing company charges a one-time fee of $$

$200, plus $$$2 for each printed book.
Is the number of books he prints a function of total cost?
Mathematics
1 answer:
baherus [9]2 years ago
4 0

Yes

Set the total cost toy, the number of books is x.

So, y= 200+2x

so cost is a dunction of the number of books

Hope this helps you!!!!! :D

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Show your work .4+6 2/5=
Temka [501]

Answer:

52/5 or 10.2

Step-by-step explanation:

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d) As a smart consumer, you are always on the lookout for sales, coupons, and rebates. While shopping for new clothes, you notic
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17.99 with 20% off 17.99*(1-20%)=14.392
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3 years ago
Which of these systems would be best solved by using the elimination method? (Check all that apply)
liraira [26]

Answer:

option 1 and 4

Step-by-step explanation:

The elimination method should be used when there are two variables with the same number in front of them but different signs.

In the first system, the first equation has -8y while the second one has 8y.

Both equations have an 8y with different signs therefore using the elimination method would be most logical.

In the fourth system, the first equation has a -4x while the second one has 4x.

Both equations have 4x with different signs therefore using the elimination method would be most logical

Reasons it can't be the other options :

In the second system, no variable has the same number before it so no variable can be eliminated unless you multiply the equations by a common multiple. The best method for this system would be graphing

In the third system y is defined by an expression therefore using the substitution method is the most logical approach.

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2 years ago
The graph shows one of the linear equations for a system of equations. Which equation represents the second linear equation for
erastova [34]

Answer:

  C)  2/3x + 3y = 3

Step-by-step explanation:

The attached graph shows only choice C intersects the desired point.

Essentially, the given graph is irrelevant. What you want to know is which equation has (3/4, 5/6) as a solution.

There are at least a couple of ways you can figure this out:

  1. try the given point in the equations to see which one works
  2. examine the features of the given equations to see which might work

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If we consider the second approach, we realize all of the equations have negative y-intercepts except choice C*. For an equation with a negative y-intercept to be the solution, the x-intercept must be less than 3/4. That is not the case for any of choices A, B, or D, leaving only choice C as a viable possibility.

We can check to see if the given point satisfies choice C. Filling in for x and y, we get ...

  (2/3)(3/4) + 3(5/6) = 2/4 +5/2 = 3 . . . . . . the point is on this line

_____

In the attached graph, choice C is the black line.

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* For an equation of the form ax+by=c, the y-intercept is c/b and the x-intercept is c/a. The sign of the quotient can be figured from the signs of a, b, and c without doing any division.

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<em>Comment on intercepts</em>

Considering the signs and values of the x- and y-intercepts can tell you a lot about the solution to a system of equations. They tell you where the line segment between the axes lies, and they can give you a clue as to the location (quadrant) of the intersection point of two lines. Often, the intercepts are all you need to create a useful graph of an equation.

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Pacific salmon swimming up the Columbia river travel 2 feet under water. Suppose one salmon darts 2 feet up and out of the water
svp [43]
Well if the salmon is two feet under the water, and darts two feet up, he wouldnt get out of the water would he??
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3 years ago
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