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2 years ago

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Hello please please help please please help me please please help please please help me please please help please please help me

please please help please please help me please

1 answer:

Hatshy [7]2 years ago

7 0

this my pu i can do whast i want

hm im a big girl now

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Solve x2-14x+21=0 by completing the square

ankoles [38]

$x^2-14x+21=0\\\\x^2-2x\cdot7+7^2-7^2+21=0\\\\(x-7)^2-49+21=0\\\\(x-7)^2-28=0\\\\(x-7)^2=28\iff x-7=-\sqrt{28}\ \vee\ x-7=\sqrt{28}\\\\x=7-\sqrt{4\cdot7}\ \vee\ x=7+\sqrt{4\cdot7}\\\\x=7-2\sqrt7\ \vee\ x=7+2\sqrt7$

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3 years ago

Evaluate the expression without using a calculator logbase5 (1/25)

Ivanshal [37]

Hey there! :)

Answer:

㏒ $_{5}$ (1/25) = -2.

Step-by-step explanation:

Starting with:

㏒ $_{5}$ (1/25) =

We can rewrite this expression as:

$5^{x} = 1/25$

1/25 is equivalent to $5^{-2}$ , therefore:

$5^{x} = 5^{-2}$

x = -2.

Therefore, ㏒ $_{5}$ (1/25) = -2.

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3 years ago

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Answer:

a^7

Step-by-step explanation:

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3 years ago

If the football pitch is a square and one side is 8 cm what is the area?

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Answer:

i believe the correct answer would be 64 cm

Step-by-step explanation:

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3 years ago

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<h2>Answer:</h2>

<u>The answer is </u><u>4y / y+3</u>

<h2>Step-by-step explanation:</h2>

See the attached figure

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3 years ago