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Whitepunk [10]
3 years ago
14

What is BE ? Please explain it in full dont just give me an answer

Mathematics
1 answer:
posledela3 years ago
5 0
There are two methods to solve this problem. One of them is the typical method and the other one is the short-cut. I will explain the shortcut

Short-cut: 
This method is quick and easy, and works with ALL triangles, which is why I suggest you use this. You make proportions. Since the triangles are similar, we can use CPCTC. Thereafter,
\frac{AD}{CE}= \frac{DB}{EB}

Now, you just need to identify the terms, substitute, and solve for the unknown, which would be k. 

\frac{12}{3} = \frac{k+5}{k-7} \\ 12(k-7)=3(k+5) \\ 12k-84=3k+15 \\ 9k=84+15 \\ 9k=99 \\ k=11[/tex]

So we found k, but it is asking for BE. Therefore, plug in the value of k, which is 11, into the expression for BE, which is k-7.

BE=K-7
k=11
BE=11-7
BE=4

Your answer is 4.





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A) 100 degrees (congruent angle)
B) 45 degrees (congruent angle)
C) 90 degrees (right angle)
D) 99 degrees (congruent angle)
E) 30 degrees (congruent angle)
F) 30 degrees (180-150=30, that is to find the other angle that is congruent to f)
5 0
2 years ago
Could you help solve this for me
finlep [7]

Answer:

Bro

Step-by-step explanation:

No

5 0
3 years ago
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laiz [17]

Answer:

X = 6

Step-by-step explanation:

4x - 2 = 3x + 4 /subtract -3x

x - 2 = 4 /add 2

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7 0
3 years ago
Read 2 more answers
The area if a rectangular frame is 32 square inches. The perimeter of the frame is 24 inches. Which shows the correct dimensions
Zarrin [17]

Answer:

8 x 4

Step-by-step explanation:

Lets say the length is x and the width is y.

xy = 32

2x + 2y = 24

Rearranging the second equation, we get:

2x = 24 - 2y

/2         /2

x = 12 - y

substitute into the first equation

y(12 - y) = 32

12y - y^2 = 32

-32             -32

-y^2 +12y - 32 = 0

x -1                      x -1

y^2 - 12y + 32 = 0

(y - 8)(y - 4) = 0

y = 8 or 4

substitute into x = 12 - y.

x = 12 - 8 = 4

x = 12 -4 = 8

so the correct dimensions are 4 x 8, as either x = 4 and y =8, or x = 8 and y = 4.

Hope I helped!

8 0
3 years ago
Pls help<br> i neeeeeeeeeeeeeeeed it
sp2606 [1]

Area of the figure = 27 square units

Solution:

Number of full squares shaded = 24

Number of half squares shaded = 0

Number of more than half square shaded = 3

Number of less than half square shaded = 4

Area of the figure = Number of full square + Number of more than half square

                               + Half of number of half squares

                             =24+3+\frac{1}{2}(0)

                             = 24 + 3

                             = 27 square units.

Area of the figure = 27 square units

3 0
3 years ago
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