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3 years ago

5

Rút gọn biểu thức√3+2√2 - √5+2√6

1 answer:

torisob [31]3 years ago

8 0

Answer:7.223389

Step-by-step explanation:

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3 years ago

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It can work well here to simplify inside parentheses first.

$\displaystyle\left(\frac{4x^{-2}y^{2}}{12x^{-4}y^{-1}}\right)^{3}=\left(\frac{4}{12}x^{(-2-(-4))}y^{(2-(-1))}\right)^{3}\\\\=\left(\frac{x^{2}y^{3}}{3}\right)^{3}=\frac{x^{(2\cdot 3)}y^{(3\cdot 3)}}{3^{3}}\\\\=\frac{x^{6}y^{9}}{27}$

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3 years ago

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Find the perimeter of a rectangle whose lenth is 24cm and diagonal is 25cm

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3 years ago

A sheet of glass has a density of 2.5 g/cm3. what is the density of the glass in kg/m3

asambeis [7]

Answer:

this is ez

Step-by-step explanation:

2.5 g converted to kg: 2.5 g x 1 kg/1000 g = 0.0025 kg = 2.5x10-3 kg

cm3 converted to m3: 1 cm3 x 10-6 m3/cm3 = 1x10-6 m3

Thus, the conversion of 2.5 g/cm3 to kg/m3 would be 2.5x10-3 kg/10-6 m3 = 2.5x103 kg/m3 = 2500 kg/m3

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