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Korolek [52]
3 years ago
11

H + 6.9=11.4 what dose h= worth a lot of points please help will give brainlist

Mathematics
1 answer:
Roman55 [17]3 years ago
8 0

Answer: 4.5

Step-by-step explanation:

11.4-6.9=4.5

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What equivalent expression was used<br> 3y+4y​
Irina18 [472]

Answer:

7y²

Step-by-step explanation:

First u group them like 4+3+y+y=7y²

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3 years ago
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Isaac played a video game 20 times and wont about 70% of the games. how many games did he win
skelet666 [1.2K]
Hello!

We know that Isaac played 20 games and won about 70% of them. Now, we must find what 70% of 20 is, so that we know how many games Isaac won.

First, convert the percentage to a decimal by dividing it by 100.

70% ÷ 100 = 0.70

Next, multiply the total amount of games Isaac played (20) by about how many he won (0.70):

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Isaac won about 14 games.
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3 years ago
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3 years ago
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Kate's swim coach informs her that she only has 35% of her workout left. Kate has swum 26 laps so far.
Sergio039 [100]
Well so far, Kate has saw 65% of her workout

65% of total = 26
0.65 * t = 26
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3 years ago
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(x-1)(x-3)(x+5)(x+7)=297
mihalych1998 [28]

First simplify the expression into polynomial form,

(x-1)(x-3)(x+5)(x+7)=297

x^4+8x^3-10x^2-104x+105=297

x^4+8x^3-10x^2-104x-192=0

Now factor into,

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Which means the solutions are,

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and then two complex solutions because determinant of the third factor D\lt0,

x^2+4x+6=0

x^2+4x+4=-2

(x+2)^2=-2\implies\boxed{x_3=i\sqrt{2}-2},\boxed{x_4=-i\sqrt{2}-2}

Hope this helps :)

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3 years ago
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