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Helen [10]
3 years ago
15

Without graphing, find the slope of the line that goes through the points, and write an equation for the line in slope-intercept

form. (0, 5), (8, 2) I will give Brainlist
Mathematics
1 answer:
Naddika [18.5K]3 years ago
3 0

Answer:

\frac{-3}{8}

Step-by-step explanation:

Slope-intercept form is: \frac{y2-y1}{x2-x1}

So, you just plug in what you know!

It would look like: \frac{2-5}{8-0}

So you end up with: \frac{-3}{8}

You cannot simplify, so this is your answer!

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What is the mode of this data set 55 78 43 39 78 61 75 50 43 78
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Mode means MOST.  Which number is displayed the most?

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Answer: 78

Note: I placed the data set into numerical order because it will help you to easily find the mode and also the median (middle number).

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3 years ago
The daily profit P ​(in thousands of​ dollars) from the sale of televisions is a function of the number x of televisions sold ​(
scZoUnD [109]

Answer:

The break-even sales amounts​ is 36 or 224.

Step-by-step explanation:

Consider the provided function.

P= -5x^2 + 13x - 4

Where x is the number of televisions sold (in hundreds) and P is the profit.

We need to calculate the break-even sales amounts​.

the​ break-even sales amounts​ is the sales amounts that result in no profit or​ loss.

That means substitute P=0 and solve for x.

-5x^2 + 13x - 4=0

5x^2-13x+4=0

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Substitute a=4, b=-13 and c=4 in above formula.

x_{1,\:2}=\frac{-\left(-13\right)\pm \sqrt{\left(-13\right)^2-4\cdot \:5\cdot \:4}}{2\cdot \:5}

x_{1,\:2}=\frac{13\pm\sqrt{169-80}}{10}

x_{1,\:2}=\frac{13\pm\sqrt{89}}{10}

x=\frac{13+\sqrt{89}}{10},\:x=\frac{13-\sqrt{89}}{10}\\x\approx2.243, \ or\ x\approx 0.357

Therefore, the break-even sales amounts​ is 36 or 224.

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3 years ago
Fill in the blanks with a positive or negative Integer
sergiy2304 [10]

Answer:

6. negative

7. positive

8. positive

9. positive

10. positive

Step-by-step explanation:

4 0
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