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snow_lady [41]
2 years ago
12

Which rule explains why these triangles are similar?

Mathematics
1 answer:
julsineya [31]2 years ago
3 0

Answer:

refer to the picture for step by step answer

hope it helps

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|-8| + |6| should be 14

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Answer:

1. no like terms

2. x^ 3 − x^ 2 − x + 1

3.x y + x + y + 1

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What is 2 and 3/4 times 4/5. <br><br><br> Please help me
skelet666 [1.2K]
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Best answer gets the brainliest!<br> Find $a/b$ when $2\log{(a -2b)} = \log{a} + \log{b}$.
andrey2020 [161]

By some properties of logarithms, rewrite the equation as

2\log(a-2b) = \log(a) + \log(b) \\\\ \log(a-2b)^2 = \log(ab)

so that

(<em>a</em> - 2<em>b</em>)² = <em>ab</em>

Expand the left side:

<em>a</em> ² - 4<em>ab</em> + 4<em>b</em> ² = <em>ab</em>

Rearrange terms to get a quadratic equation in <em>a</em>/<em>b</em> :

<em>a</em> ² - 5<em>ab</em> + 4<em>b</em> ² = 0

<em>b</em> must be greater than 0, otherwise log(<em>b</em>) doesn't exist, and the same goes for <em>a</em>. So we can divide by <em>b</em> ² to get

<em>a</em> ²/<em>b</em> ² - 5<em>a</em>/<em>b</em> + 4 = 0

Factorize and solve for <em>a</em>/<em>b</em> :

(<em>a</em>/<em>b</em> - 4) (<em>a</em>/<em>b</em> - 1) = 0

==>   <em>a</em>/<em>b</em> = 4   or   <em>a</em>/<em>b</em> = 1

However, if <em>a</em>/<em>b</em> = 1, then <em>a</em> = <em>b</em> makes <em>a</em> - 2<em>b</em> = -<em>b</em>. But we must have <em>b</em> > 0, so we omit the second solution and end up with

<em>a</em>/<em>b</em> = 4

5 0
2 years ago
Hii! please help. i’ll give brainliest if you give a correct answer thanks!
Jet001 [13]

Answer:±

5 ÷9/10,4/5 ÷3/7Ф

Step-by-step explanation:≠

I hope this help if it´m wrong I´m so sorry but i´m sure its right tho≤≥

<h2>#Hope have nice day<3Δ</h2><h3>~Regards~⇔</h3><h3>-44014137⊄⊅</h3>
4 0
3 years ago
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