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vitfil [10]
3 years ago
8

Harold rented a steam cleaner to clean his carpets. There was a charge for cleaning solution and a daily rental charge for three

days. The total bill was $83.50. • The cleaning solution cost $25.
• The cost to rent the cleaner was the same for each day.
How much, in dollars, did Harold pay for each day of the rental?
Mathematics
1 answer:
stepladder [879]3 years ago
8 0
Subtract 25 from 83.50 to get 58.5 . Then divide that by 3 to get the cost per day: $19.5 
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6x+8y=5 and 3x+4y=-2
Feliz [49]

ANSWER If you solve for x you get -4/3 y+5/6                                                                            If you solve for y you get -3/4x +5/8.

Step-by-step explanation

and then the second answer is    

If you solve for x you get-4/3y +-1/2

If you solve for y you get -3/4x +-1/2

3 0
2 years ago
Make X the subject of the formula<br><br><br>will mark brainliest!!​
irga5000 [103]

Answer:

y =  \frac{x + 2}{x - 4}  \\ xy - 4y = x + 2 \\ xy - x = 4y + 2 \\ x(y - 1) = 4y + 2 \\ x =  \frac{4y + 2}{y - 1}  \\  \boxed{x =  \frac{2(2y + 1)}{y - 1} }

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3 0
2 years ago
Give an example of an equation with an infinite number of solutions. Then make one change to the equation so that it has no solu
mrs_skeptik [129]
Two equations with infinite solutions would look the exact same. Example:
y=mx+b
y=mx+b
Example 2
y=2x+5
y=2x+5
For an equation with no solution they would have the same slope but different y intercepts. An equation with same slope and same y intercepts would have infinite solutions. 
5 0
3 years ago
L need the answer for this question asap!!!
DochEvi [55]
<h2>Answer:</h2><h3>A. Domain </h3>

The domain of a function is the x-values that the graph applies to. This means that the domain is whatever x-values the graph crosses. All vertical parabolas (like the one pictured) have a domain of all reals. This is because any x-value could be plugged into the function and provide a y-value. while it may not seem like it, that graph will cover every single x-value in existence.

  • Domain = All reals

<h3>B. Range</h3>

The range is similar to the domain but is for y-values. So, the range is whatever y-values the graph applies to and crosses. As you can see from the graph, there are no y-values above 1. This means the range is y≤1.

  • Range = y ≤ 1

<h3>C. Increasing Interval</h3>

A graph is increasing when the y-values are increasing. So, on the parent function of a parabola, the graph increases to the right and decreases to the left. However, this graph is inverted and shifted to the left, so the interval will also be flipped and shifted. In this case, the graph increases from -∞ to 2.

  • Increasing Interval = [-∞, 2]

<h3>D. Decreasing Interval</h3>

The decreasing interval is very similar to the increasing interval. This interval applies when the y-values are decreasing as the x-values increase. For a parabola, the increasing and decreasing intervals always meet at the x-value of the vertex, which is 2 on this graph. The y-values decrease during the interval 2 to ∞.

  • Decreasing Interval = [2, ∞]

<h3>E. Opening</h3>

The direction of a parabola is decided by the sign (+ or -) of the leading coefficient. Positive coefficients open up and negative opens down. As you can see from the graph, the sides of the parabola point downwards. This means that the leading coefficient must be negative.

  • Opening = Down

<h3>F. Min and Max</h3>

A parabola will always only have a min or a max, never both. If a graph opens up it has a min because there is one y-value which is the minimum possible y-value. Graphs that open downwards have a maximum because there is one y-value that is the largest possible. So, this graph has a maximum of 1 because that is the largest possible y-value.

  • Max = 1
4 0
2 years ago
What is 4 - 2 + 8 divided by 2
andriy [413]
Answer: 5

example:

4-2=2+8=10/2
=(2)
7 0
3 years ago
Read 2 more answers
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