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3 years ago

Help on complex numbers

1 answer:

4 0

1) 1/6i=-6i
2) - (-4+5i)=4-5i
3) 1/(2+i)=(2-i)/(4+1) = (2-i)/5
4)1/(-3+5i)=(-3-5i)/(9+25)
5) square root of ( 5*5 + 12*12) = 13

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Find the slope of the line that passes through (4,2) and (9,1)?

pshichka [43]

Answer:

The slope of the line is $\displaystyle -\frac{1}{5}$ .

Step-by-step explanation:

We are given two coordinate points:

$(4, 2)$
$(9, 1)$

We are asked to find the slope of the line.

We can use the rise-over-run formula to solve for the slope of the line.

$\displaystyle \text{slope} = \frac{\text{rise}}{\text{run}}\\\\\text{slope} = \frac{y_2-y_1}{x_2-x_1}$

However, we firstly need to name our coordinate points.

In math, we can label our coordinates using the following label system:

$(x_1, y_1), (x_2, y_2)$

Therefore, we can also label our coordinates as such:

$x_1 = 4$
$y_1 = 2$
$x_2 = 9$
$y_2 = 1$

Now, we can supply these values into the formula and solve for our slope, or a better known variable, <em>m</em>.

$\displaystyle m = \frac{1 - 2}{9 - 4}\\\\m = \frac{-1}{5}\\\\m = -\frac{1}{5}$

Therefore, our slope is $\displaystyle -\frac{1}{5}$ .

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3 years ago

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avanturin [10]

Answer:

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Step-by-step explanation:

the diameter is just the radius plus the radius so its 28

and i just solved for the area and got 97.4

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Rom4ik [11]

Answer: 24

Step-by-step explanation:

24/6 = 4

4 - 3 =

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