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Andru [333]
3 years ago
13

Multiply (8 + 3i)(3 + 5i)

Mathematics
2 answers:
marysya [2.9K]3 years ago
7 0

Answer:

24 + 49i+ 15i2

Step-by-step explanation:

i used foil to multiply i am v smart pleses give me likes

svetoff [14.1K]3 years ago
6 0
12+49i
when you get i^2 it's the same as multiplying by -1 so 
factoring it out will turn out like this
15i^2+40i+9i+27
instead of 15 i^2 multiply 15 x-1
-15+49i+27
12+49i
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HELP PLEASE???!!!!!!!
Fiesta28 [93]

Answer:

<h2>A. (-4, -15)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}y=\dfrac{3}{4}x-12&(1)\\y=-4x-31&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\\dfrac{3}{4}x-12=-4x-31\qquad\text{multiply both sides by 4}\\\\3x-48=-16x-124\qquad\text{add 48 to both sides}\\\\3x=-16x-76\qquad\text{add}\ 16x\ \text{to both sides}\\\\19x=-76\qquad\text{divide both sides by 19}\\\\x=-4\\\\\text{Put it to (2):}\\\\y=-4(-4)-31\\y=16-31\\y=-15

7 0
3 years ago
What is the Y value of the vertex of the function F of X equals X -3 X +11
Y_Kistochka [10]

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8 0
3 years ago
Which are correct representations of the inequality -3(3x-5)&lt;5(2-x)
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Step-by-step explanation:

4 0
2 years ago
What is 946 divided by 35
Verdich [7]

Answer:

Decimal Form:

27.02857142…

Mixed Number Form:

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
I’m confused :( I will mark as Brainliest and give you points
Ludmilka [50]

Answer:

123.5 square inches

Step-by-step explanation:

Given: To find the area of a rectangle, you have to multiply base times height.

To find the area of a triangle, you have to do base times height devided by 2.

Finding the area: Let's break up this shape into polygons. At the bottom there is a rectangle. We know that to find the area of the rectangle you have to do base times height. 13in•7in will give you <u>91in</u> square for the rectangle.

Now for the triangle. If you can see, if you break the triangle in half, there are 2 right triangles. Let's look at the right one for now. Since we know that to find the area of a triangle you have to do base times height divided by 2,  you do 5in•6.5in=32.5in. 32.5in divided by 2 is <u>16.25in </u>square which is the area of one triangle. You might be wondering why i did 5•6.5, and that's because at the bottom of the rectangle you can see it's 13in, and 13in÷2=6.5in.

We already found the area of the rectangle and one triangle. The other triangle is equal to it so we can just do 16.25+16.25=<u>32.5in</u> square for both of the triangles.

Now we add it all up: 32.5+91=123.5 square inches

8 0
3 years ago
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