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Vladimir79 [104]
4 years ago
13

Regroup fractions 1- 3/8

Mathematics
1 answer:
Lena [83]4 years ago
3 0
5/8 is the answer - go follow me at @web.bie
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I don't know how to subtract intgers can someone help like. 5-(-8)
tankabanditka [31]

Its 13, because you multiply -8 and the negative beside it which turns it into a positive so you add 8 and 5

5 0
3 years ago
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What is the slope of the line that passes through the points (7, -9) <br>and (15, -29)?
vekshin1

answer: 4.75

Step-by-step explanation:

To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points. Which means, y1 - y2 / x1 - x2 = 29 - (-9) / 15 - 7

= 29 + 9 / 8

= 38/8

=4.75

6 0
3 years ago
At Cheng's Bike Rentals, it costs $25 to rent a bike for 5 hours.
timurjin [86]

Answer:

25÷5=5

So the answer is (5)

7 0
2 years ago
. A firm produces a commodity and receives $100 for each unit sold. The cost of producing and selling x units is 20x + 0.25x 2 d
kirza4 [7]
So for each unit they get $100, so if they sell "x" units, they intake 100x, that's just the gross income, and therefore the Revenue.

Now, they have a cost of 20x + 0.25x² if they "x" units, now, bearing in mind that if you pluck out the costs out of the incoming revenue, what's leftover, is a surplus amount, namely the Profit.  Therefore, profit p(x) = revenue - costs, or  100x - (20x + 0.25x²), which is p(x) = -0.25x² +80x.

a)
now, what's the highest profit they can make?  check the picture below.

\bf p(x)=-0.25x^2+80x\\\\&#10;-------------------------------\\\\&#10;\textit{ vertex of a vertical parabola, using coefficients}\\\\&#10;\begin{array}{lcclll}&#10;p(x) = &{{ -0.25}}x^2&{{ +80}}x&{{ +0}}\\&#10;&\uparrow &\uparrow &\uparrow \\&#10;&a&b&c&#10;\end{array}\qquad &#10;\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)&#10;\\\\\\&#10;\left( -\cfrac{80}{-0.50}~,~0-\cfrac{80^2}{-1} \right)\implies \left( \stackrel{\textit{quantity}}{160}~,~\stackrel{\textit{profit value}}{6400}  \right)

b)

well, if a tax is imposed on them, and say, they take it out of the revenue, then their new revenue is not 100x, is 90x, thus   \bf p(x)=-0.25x^2+70x

and you can use the same formula as above to get the x-coordinate for that vertex.

\bf p(x)=-0.25x^2+70x\\\\&#10;-------------------------------\\\\&#10;\textit{ vertex of a vertical parabola, using coefficients}\\\\&#10;\begin{array}{lcclll}&#10;p(x) = &{{ -0.25}}x^2&{{ +70}}x&{{ +0}}\\&#10;&\uparrow &\uparrow &\uparrow \\&#10;&a&b&c&#10;\end{array}\qquad &#10;\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)&#10;\\\\\\&#10;\left( -\cfrac{70}{-0.50}~,~0-\cfrac{70^2}{-1} \right)

7 0
3 years ago
What is the median of this data?
melisa1 [442]
The correct answer is 48
6 0
4 years ago
Read 2 more answers
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