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oksian1 [2.3K]
3 years ago
7

What is the slope between the point (0,0) and (3,-9)

Mathematics
1 answer:
Readme [11.4K]3 years ago
5 0

Answer:

-3

Step-by-step explanation:

m=\frac{y_{1}- y_{2}}{x_{1} -x_{2}} \\m=\frac{-9-0}{3-0} \\m=\frac{-9}{3} \\\\\m=-3

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A company has an annual electric bill of $495,000. Of that amount, 3/5 was billed
disa [49]

Answer:

$74,250

Step-by-step explanation:

495,000x0.6=297,000

297,000/4=74,250

7 0
3 years ago
2. A student had taken six tests and received scores of 88, 73, 81, 83, 79, 94. The seventh test
Veronika [31]

Answer:

a) 83

b) mean and mode are both 83

Step-by-step explanation:

a) mean is the average. so add all the numbers and divide by the number of numbers.

<u>88 + 73 + 81 + 83 + 79 + 94 + T</u> = 83

7

b) median - put the numbers in numerical order, smallest to largest, what is the middle number (4th number) 73, 79, 81, 83, 83, 88, 94

mode - which number shows up most frequently?

8 0
4 years ago
For the function y=-2x^2+4x+1, what are the coordinates of the vertex? Is it a maximum or minimum point? Hint: use the vertex/ax
masya89 [10]

Step-by-step explanation:

y = -2x² + 4x + 1

Complete the square.

y = -2 (x² − 2x) + 1

y = -2 (x² − 2x + 1) + 1 − (-2)(1)

y = -2 (x − 1)² + 3

The vertex is (1, 3).  The leading coefficient is negative, so the vertex is a maximum.

Graph: desmos.com/calculator/qsih3rd8ev

8 0
4 years ago
What is the slope and y-intercept of –2x + 4y = 16<br> please show work!!
Lilit [14]

Answer:

1/2

Step-by-step explanation:

Okay so the find slope you have the put the line in y-mx+b form.  In -2x+4y=16 to get 'y' by its slef you have to add 2y to each side.  4y=16+2x then you have to divide by 4 to get y alone.  y=4+1/2x

Your slope is 1/2

3 0
3 years ago
-7.85=x/-3.14 <br> solve for x
liraira [26]
Okay. So, from the two numbers that are shown right now, x will definitely represent a positive number. What we have to do is the inverse. Basically, we'll do the inverse (opposite of division) and multiply both numbers to find x. 7.85 * 3.14 = 24.649, which rounds to 24.65 if you need to round your answer to the nearest hundredth or 24.6 if you need to round it to the nearest tenth. Or if you can just use the number as it shows up, then the real answer is 24.649
7 0
3 years ago
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