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zalisa [80]
2 years ago
13

Help me, please !!!!

Mathematics
1 answer:
ehidna [41]2 years ago
7 0
20 and 3/4 is 20.75
20 and 7/8 is 20.875
20 and 1/5 is 20.2
20 and 4/5 is 20.8
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2(2x+1)=4x+2 infinite or none
fiasKO [112]
2(2x + 1) = 4x + 2

4x + 2 = 4x + 2

All real numbers are solutions :)
6 0
3 years ago
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If x-y=9,x²+y²=27,then xy=?​
Tresset [83]

Answer:

xy = - 27

Step-by-step explanation:

Note that

(x - y)² = x² - 2xy + y² ← substitute given values, that is

9² = 27 - 2xy

81 = 27 - 2xy ( subtract 27 from both sides )

54 = - 2xy (divide both sides by - 2 )

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5 0
2 years ago
Hello, ive been having issues with a quite easy topic. Slopes of lines? I dont really know how to solve this.
liraira [26]
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2 years ago
Simplify the radical expression.
ankoles [38]

Answer:

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\sqrt[4]{x^4y^{15}}=\sqrt[4]{x\cdot x\cdot x\cdot x\cdot y^3\cdot y^3\cdot y^3\cdot y^3\cdot y^3}=\boxed{xy^3 \sqrt[4]{y^3}}

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Question in picture solve
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Answer:

all real numbers greater than two

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