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guajiro [1.7K]
3 years ago
7

Giving brainliest for whoever answer this correctly 10 points!!!

Mathematics
1 answer:
saw5 [17]3 years ago
6 0

Answer:

A. 0

Step-by-step explanation:

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The lengths of the diagonals of rectangle ABCD intersect at E. If AE =x+4 and CE= 3x-12. What is the length of BD?
swat32

Answer:

DB = 24

Step-by-step explanation:

First, note that the diagonals of a rectangle are equal and bisect each other. In other words, DB = CA and CE = EA and DE = BE.

Also, AE + CE = CA

So, using this, we can write this equation:

AE = CE

x + 4 = 3x -12

Subtract 4 from both sides.

x = 3x -16

Subtract 3x from both sides.

-2x = -16

Divide both sides by -2

x = 8

Then, substitute this into AE + CE = CA

x + 4 + 3x - 12 =

8 + 4 + 24 - 12 = 24

Then, because CA = DB,

DB = 24

I hope this helps! Feel free to ask any questions! :)

5 0
3 years ago
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What’s the area of this figure
kvasek [131]

Answer:

743.25m^2

Step-by-step explanation:

Area of triangle = 1/2bh

= 1/2 x 30 x 26

= 390

Area of semi circle = 1/2 πr^2

= 1/ 2 x 3.14 x 15 x15

=353.25m^2

= 390 + 353.25

= 743.25m^2

8 0
3 years ago
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Simplify: (-2)(-3)+(4)(-8)<br><br>Simplify: (3)(-6)-18​
koban [17]

Answer:

4

Step-by-step explanation:

5 0
3 years ago
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The equation tan (x+pi/6) is equal to
Degger [83]

Answer:

(√3 tan x + 1) / (√3 - tan x)

Step-by-step explanation:

tan (x+\frac{\pi }{6})\\= \frac{tan x+\frac{1}{\sqrt{3} } }{1-\frac{tan x}{\sqrt{3} } } \\= \frac{\sqrt{3} tan x + 1}{\sqrt{3} -tan x}

5 0
2 years ago
Graph the line with slope -1/3 and y -intercept 6 .
kirill115 [55]

Answer:

plot a point at 6 up from (0,0) and then go down one and over three places then plot another point- and so on - and so on

Step-by-step explanation:

5 0
3 years ago
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