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Katena32 [7]
3 years ago
12

Simplify (5i-2i) (2+6i)-(4-i) show all work​

Mathematics
1 answer:
suter [353]3 years ago
5 0

↝ (3i)(2+6i)-(4-i)

↝ 6i+18i²-4+i

↝ 6i-18-4+i [ i² = -1]

Therefore, it's 7i-22

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3. If your siice a rectangular pyramid parallel to it base, what will be the shape of the cross section?​
zubka84 [21]

Answer:

<em><u>1</u></em><em><u>.</u></em><em><u> </u></em><em><u>A cross section is the new face you see when you slice through a three-dimensional figure. For example, if you slice a rectangular pyramid parallel to the base, you get a smaller rectangle as the cross section.</u></em>

5 0
2 years ago
Help with math please???
Tresset [83]

Okay, let's see...

The problem is asking for a linear equation most likely in the form of y=mx+b

y is another way to say f(x)

<em>m = slope </em>

<em>b = y intercept </em>

Let's start with the y intercept first.

Y intercept means ' When does the line touch (intercept) the y axis.

In this case, if you look at the graph, the line <em>touches </em>the y axis at -1.

-1 will replaces b

To find the slope we are going to take 2 precise points from the graph.

Lets use <em>(0,-1)</em> and <em>(-6,4) </em>

To find the slope, we're going to use \frac{(y_{2}  -y_{1} )}{(x_{2} -x_{1} )}

4 - (-1)     /     -6  - 0

Solve, our slope is 5/-6

That is our m

Our final equation is

f(x)=\frac{-5}{6} x -1

3 0
3 years ago
Write an equation in point-slope form for m=2;(5,6)
yanalaym [24]

Answer:

y-6 = 2 (x-5)

Step-by-step explanation:

point slope form

y-y1 = m(x-x1)

y-6 = 2 (x-5)


6 0
3 years ago
Put y + 3 = -3(x + 2) in slope-intercept form.
alexgriva [62]

Answer:

y + 3 =  - 3(x + 2) \\ y + 3 =  - 3x - 6 \\ y =  - 3x - 9

5 0
3 years ago
Read 2 more answers
C. Find the value of x below:<br> 15.r + 5<br> -2 + 16.
nydimaria [60]

Answer:

7

Step-by-step explanation:

(15x + 5) and (-2 + 16x) represents the measures of corresponding angles.

Measures of corresponding angles are equal.

Therefore,

- 2 + 16x = 15x + 5

16x - 15x = 5 + 2

x = 7

5 0
3 years ago
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