timiaparker
23.08.2019 •
Mathematics
Is 0.4 less than, greatest than, or equal to 44%? explain
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Ответ:
0.4 is 40% in percent form
0.4 < 44%
Ответ:
Ответ:
1a. -5
1b. 3
1c. -5i
2. S = 11 m
3. S = 4 ft.
Step-by-step explanation:
1a. ∵ cube root of -125 means ∛(-5)(-5)(-5) = ∛(-5)³
∴
= -5
1b.![\sqrt[4]{81}=\sqrt[4]{(3)(3)(3)(3)} =\sqrt[4]{(3)^{4} }=(3^{4})^{\frac{1}{4}}=3](/tpl/images/0496/0064/be4a4.png)
1c.![\sqrt[4]{-625}=\sqrt[4]{(-1)(625)}](/tpl/images/0496/0064/59be6.png)
∵ i =![\sqrt[4]{-1}](/tpl/images/0496/0064/b6bfb.png)
∴![\sqrt[4]{(-1)(625)}= i \sqrt[4]{5^{4}} =i (5^{4})^{\frac{1}{4} } = 5i](/tpl/images/0496/0064/f7e3d.png)
2. The volume of the cube = S³
∵ V = 1331 m³
∴ S = ∛1331 = 11 m
3. The volume of the cube = S³
∵ V = 64 ft.³
∴ S = ∛64 = 4 ft.