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Ivahew [28]
3 years ago
10

Prove that a line parallel to one side of a triangle divides the other two sides proportionally. Be sure to create and name the

appropriate geometric figures. (10 points)
WILL GIVE BRAINLIEST IF CORRECT

Mathematics
1 answer:
ryzh [129]3 years ago
7 0

Answer:

in steps

Step-by-step explanation:

DE // BC

m∠ADE = m∠ABC   and m∠AED = m∠ACB

∴ ΔADE similar to ΔABC

AB/AD = AC/AE

(AD + DB) / AD = (AE + EC) / AE

AD/AD + DB/AD = AE/AE + EC/AE

1 + DB/AD = 1 + EC/AE

DB/AD = EC/AE    (AD/DB = AE/EC)

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Is this possible<br> Iiii
Gwar [14]

Yeah Imao you usually do these type of questions on a calculator but I've tried writing it on a calculator and it keeps on saying "error" so I'm gonna guess the question is wrong or sth

but if you type out the question without the bracket before the 12 you'll get 6.63

anyway hope this helps- have a good day bro cya)

8 0
3 years ago
Subtract -2x^2+4x-1−2x
vivado [14]

Answer:

8x²- x -8

Step-by-step explanation:

The question is not well written. I guess what you mean is:

Subtract -2x^2+4x-1 ( minus 2x squared plus 4x minus 1) from 6x^2+3x-9 (6x squared plus 3x minus 9).

To  subtract -2x^2+4x-1 from 6x^2+3x-9, that is

6x^2+3x-9 - (-2x^2+4x-1). This can be written as

6x²+3x-9 - (-2x²+4x-1)

Now, opening the bracket, we will get

6x²+3x-9 +2x²-4x+1

Then, collecting like terms, we get

6x²+2x²+3x-4x-9+1

6x²+2x² = 8x²

3x-4x = -x

-9+1 = -8

∴6x²+2x²+3x-4x-9+1 becomes

8x²-x -8

The answer is 8x²-x -8.

7 0
3 years ago
Laine reads 25 pages in 30 minutes.
zlopas [31]

Answer:

4 hours

Step-by-step explanation:

25 * 8 = 200

so, 30 * 8 = 240(minutes)

240 / 60 = 4 hours

Hope it helps!

Mark brianliest if I'm right please!

7 0
3 years ago
I NEED HELP PLSS!!
ahrayia [7]

Answer:

Yo I got the same question as you lmk if u got it bro

Step-by-step explanation:

4 0
3 years ago
PLEASE ANSWER ITS THE LAST QUESTION!!
Vika [28.1K]

Answer:

The length of BC would be 12.2 mm.

Step-by-step explanation:

Given,

In triangle ABC,

∠BAC = 90°,

Thus by the Pythagoras theorem,

We have,

AB = 9.6 mm and CA = 7.6 mm,

By substituting the values,

Step-by-step explanation:

8 0
2 years ago
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