3 years ago

Help me quick please

Mathematics

1 answer:

solmaris [256]3 years ago

3 0

Answer:

Step-by-step explanation:

I hope this helps

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What is the length of CD in this diagram, ABC - EDC,

natima [27]

Answer:

Option A is the right option.

solution,

∆ABC~∆EDC

$\frac{bc}{cd} = \frac{ac}{ec} \\ \:$

putting the values,

$\frac{20 - x}{x} = \frac{20}{5} \\ or \: 5(20 - x) = 20x(cross \: multiplication) \\ or \: 100 - 5x = 20x \\ or \: - 5x - 20x = - 100 \\ or \: \: - 25x = - 100 \\ \: or \: x = \frac{ - 100}{ - 25} \\ x = 4$

Hope this helps..

Good luck on your assignment..

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3 years ago

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Some1 help pls and ty

joja [24]

Answer:

b=4 x A

Step-by-step explanation:

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2 years ago

16: 2r - 6 =22 <br> 17: 3g + 7 = 31<br> 18: 3f - 7 = 38

cricket20 [7]

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3 years ago

17) Which is an example of an statement that is accepted without proof? A) Parallel Postulate B) Pythagorean Theorem C) Betweenn

k0ka [10]

<span>A: because a postulate is a statement that is accepted without proof.</span>

6 0

3 years ago

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4n-3=-2n+9 What is the value of the variable 'n'?

julsineya [31]

4n - 3= -2n + 9
add 3n to both sides

4n= -2n +12
add 2n to both sides

6n= 12
divide both sides by 6

n= 2

Check:
4n-3=-2n+9
4(2)-3= -2(2)+9
8-3= -4+9
5=5

Hope this helps! :)

7 0

4 years ago