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Elan Coil [88]
3 years ago
12

Answer it is another question from my test

Mathematics
1 answer:
sineoko [7]3 years ago
3 0
Oi no cheating on a test sir
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1. thats because in the alphabet where a=1 and b=2 and c=3, A=1
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A car velocity changes from 0 m/s to 30m/s 10 seconds.
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After the change, the car is now moving faster than before.

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What if the simplest form of the radical expression?
patriot [66]

Answer:

\large\boxed{\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}=-\dfrac{7+2\sqrt{10}}{3}}

Step-by-step explanation:

\text{Use}\ (a-b)(a+b)=a^2-b^2\ \text{and}\ (a+b)^2=a^2+2ab+b^2\\\\\\\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}=\dfrac{\sqrt2+\sqrt5}{\sqrt2-\sqrt5}\cdot\dfrac{\sqrt2+\sqrt5}{\sqrt2+\sqrt5}=\dfrac{(\sqrt2+\sqrt5)^2}{(\sqrt2)^2-(\sqrt5)^2}\\\\=\dfrac{(\sqrt2)^2+2(\sqrt2)(\sqrt5)+(\sqrt5)^2}{2-5}=\dfrac{2+2\sqrt{(2)(5)}+5}{-3}\\\\=-\dfrac{7+2\sqrt{10}}{3}

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4 years ago
Can y’all help me with 11
Allushta [10]

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D

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18(14 + t)

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6 0
4 years ago
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trina is purchasing a new bike. the store is having a 20% off sale, and she has a 10% coupon. the original price of the bike is
Nina [5.8K]
We are given that:
i- The store is having 20% off sale
ii- Trina has a 10% coupon

Therefore, Trina will be having a discount = 20 + 10 = 30% of the bike's price
This means that:
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We are given that:
The original price of the bike = <span>$89.75
We now know that:
Trina will pay 70% of its price

Therefore:
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Final price = $62.825

Hope this helps :)</span>
8 0
4 years ago
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