2 years ago

Help me math whoever is goood

Mathematics

1 answer:

Natasha_Volkova [10]2 years ago

7 0

The conversion is 9*9=81
The conversion is true

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What is the value of a? Blank units

Damm [24]

Answer:

289

a^2 x b^2 = c^2

a = 8 b= 15 c = s

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square root 289 = 17

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3 years ago

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Elza [17]

Answer:

x>-2

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2 years ago

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2 years ago

Which answer is equivalent to ??? Help please

grigory [225]

Answer:

$\large\boxed{\dfrac{36}{25}}$

Step-by-step explanation:

$\text{Use}\ a^{-n}=\dfrac{1}{a^n}\\\\\dfrac{5^{-2}\cdot9}{2^4\cdot4^{-3}}=(5^{-2}\cdot9):(2^4\cdot4^{-3})=\left(\dfrac{1}{5^2}\cdot9\right):\left(2^4\cdot(2^2)^{-3}\right)\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=\left(\dfrac{1}{25}\cdot9\right):(2^4\cdot2^{-6})\\\\\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=\dfrac{9}{25}:2^{4+(-6)}=\dfrac{9}{25}:2^{-2}=\dfrac{9}{25}:\dfrac{1}{2^2}=\dfrac{9}{25}:\dfrac{1}{4}=\dfrac{9}{25}\cdot\dfrac{4}{1}=\dfrac{36}{25}$

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3 years ago

My sister has 200 saved text messages of these 24 from her brother. What percent of the total text are from her brother.

kirill115 [55]

Answer: 12%

Step-by-step equation:

$\frac{12}{200}$ = .12

.12

=

1.2

=

12%

12%

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3 years ago