HELP ASAP WILL GIVE BRAINLY!

Mathematics

1 answer:

WINSTONCH [101]3 years ago

8 0

Answer:

cos 60° = 1/2

Step-by-step explanation:

$\sin( \alpha ) = \cos(90 - \alpha )$

$\sin(30) = \cos(90 - 30) \\ \sin(30) = \cos(60)$

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WILL MARK BRAINLY IS RIGHT!!!!

Tom [10]

Answer:

Step-by-step explanation:

4 0

3 years ago

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Simplify the given expression and assume that no variable equals zero. And show your work, please.

zalisa [80]

$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\
\left( \cfrac{32x^{18}y^{10}}{16x^9y^{20}} \right)^2\impliedby \textit{first off, let's distribute the exponent}
\\\\\\
$

$\bf \left( \cfrac{32^2x^{2\cdot 18}y^{2\cdot 10}}{16^2x^{2\cdot 9}y^{2\cdot 20}} \right)\implies \cfrac{32^2x^{36}y^{20}}{16^2x^{18}y^{40}}\implies 
\cfrac{32^2x^{36}x^{-18}}{16^2y^{-20}y^{40}}
\\\\\\$

$\bf \cfrac{32^2x^{36-18}}{16^2y^{-20+40}}
\implies 
\cfrac{32^2x^{18}}{16^2y^{20}}\implies \cfrac{32\cdot 32}{16\cdot 16}\cdot \cfrac{x^{18}}{y^{20}}\implies \cfrac{32}{16}\cdot \cfrac{32}{16}\cdot \cfrac{x^{18}}{y^{20}}
\\\\\\
\cfrac{2}{1}\cdot \cfrac{2}{1}\cdot \cfrac{x^{18}}{y^{20}}\implies \cfrac{4x^{18}}{y^{20}}$

6 0

4 years ago

inysia [295]

Answer:c

Step-by-step explanation:

7 0

2 years ago

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HELPPPP...

uysha [10]

A. $6800 + $1360= $8160 total cost

b.
$68.85 each * 165 bracelets = $11360.25
$11360.25- $8160 total cost = $11278.75 profit

$11278.75 profit/$8160 total cost= 1.38218
1.38218= about 138%

Final answer: 138%
Warning: This answer will vary if you find the percent over cost (not including duty).

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3 years ago

Three is twenty-one, divided by the sum of a number and five

Ahat [919]

3=21/(x+5)
Cross multiply
3(x+5)=21
Divide 3
X+5 = 7
Subtract 5
X= 2

6 0

3 years ago

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