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3 years ago

Write 64 as a power with exponent 3

Mathematics

2 answers:

attashe74 [19]3 years ago

8 0

Answer:

4³

I think this is right. the problem isnt explained very well.

Masja [62]3 years ago

4 0

Answer:

Step-by-step explanation:

because 4x4 is 16 and 16 x four is 64

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Solve the equation exactly overbthe interval [0,360) Sin^2x-cos^2x=0

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$\bf sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)\\\\
-----------------------------\\\\$

$\bf sin^2(x)-cos^2(x)\implies sin^2(x)-[1-sin^2(x)]=0
\\\\\\
sin^2(x)-1+sin^2(x)=0\implies 2sin^2(x)=1\implies sin^2(x)=\cfrac{1}{2}
\\\\\\
sin(x)=\pm\sqrt{\cfrac{1}{2}}\implies \measuredangle x=sin^{-1}\left( \pm\sqrt{\cfrac{1}{2}} \right)\iff \measuredangle x=sin^{-1}\left( \pm\cfrac{\sqrt{2}}{2} \right)
\\\\\\
\measuredangle x=
\begin{cases}
\frac{\pi }{4}\\\\
\frac{3\pi }{4}\\\\
\frac{5\pi }{4}\\\\
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8 0

3 years ago

2. Quinton sold the most tickets in his school for the annual Autumn Festival. As a

juin [17]

Answer:

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4 0

3 years ago

Read 2 more answers

Which of the following is a solution of x2 + 2x + 8? (1 point)

Mrrafil [7]

Answer

−1 + i times the square root of 7

Explanation

x² + 2x + 8

I will use the complete square method to find the value of x.

x² + 2x + 8

x² + 2x = -8

x² + 2x + (2/2)² = -8 + (2/2)²

x² + 2x + 1 = -7

(x + 1)² = -7

x + 1 = √(-7)

x = √(-7) - 1

= i√7 - 1

= -1 + i√7

−1 + i times the square root of 7

4 0

4 years ago

Can someone please help?

Alecsey [184]

Answer:

73 degrees

Step-by-step explanation:

6 0

3 years ago

Someone help me plz!!! It’s algebra

Fittoniya [83]

Answer:

Step-by-step explanation:

$a(x)=x^3-3\\b(x)=2x+1\\c(x)=\frac{3}{x+2} \\d(x)=4-x\\a.\\a(4)=4^3-3=64-3=61\\b.\\\\c(x-5)=\frac{3}{x-5+2} =\frac{3}{x-3} \\c.\\d(-1)=4-(-1)=4+1=5\\b(d(-1))=b(5)=2(5)+1=11\\\\d.\\(coa)(2)=c(a(2))=c(2^3-3)=c(8-3)=c(5)=\frac{3}{5+2} =\frac{3}{7}$

7 0

3 years ago