Plss help mart brain list

Mathematics

2 answers:

stich3 [128]3 years ago

6 0

Answer:

X=14

Step-by-step explanation:

Hope this helps , good luck ^^

olasank [31]3 years ago

5 0

The answer is x=14. Just lmk if you need the work too

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A cashier checks the price of a kitchen table that is marked $51, because it usually rings up at $86. What percentage is the dis

Tpy6a [65]

90000000000 y r u cheating

4 0

3 years ago

Write 3 other fractions that are equivalent to the given fraction. Include simplest Ford of the fraction

noname [10]

11.

$\dfrac{16}{100} =\\1)=\dfrac{160}{1000} \\2)=\dfrac{32}{200} \\3)=\dfrac{4}{25}$

12.

$\dfrac{32}{48}=\\1) =\dfrac{4}{6} \\2)=\dfrac{64}{96} \\3)=\dfrac{2}{3}$

13.

$\dfrac{21}{48} =\\1)=\dfrac{7}{16} \\2)=\dfrac{42}{96} \\3) =\dfrac{210}{480}$

6 0

3 years ago

Help!!!!!!!!!!!!!!!!

kaheart [24]

Answer:

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

Step-by-step explanation:

First, simplify each term:

$\sin\left(\dfrac{\pi}{2}+\alpha\right)=\cos \alpha\\ \\\cos \left(\dfrac{\pi}{2}+\alpha\right)=-\sin \alpha\\ \\\cos \left(\alpha-\dfrac{3\pi}{2}\right)=-\sin \alpha\\ \\\sin \left(\dfrac{3\pi}{2}+\alpha\right)=-\cos \alpha$

Then given expression is equivalent to

$\cos ^3\alpha+(-\sin \alpha)^3-(-\sin \alpha)+(-\cos \alpha)\\ \\=\cos ^3\alpha-\sin^3 \alpha+\sin \alpha-\cos \alpha\\ \\=(\cos\alpha-\sin\alpha)(\cos^2\alpha+\cos\alpha\sin\alpha+\sin^2\alpha)-(\cos\alpha-\sin\alpha)\\ \\=(\cos\alpha-\sin\alpha)(1+\cos\alpha\sin\alpha-1)\ \ [\cos^2\alpha+\sin^2\alpha=1]\\ \\=\cos\alpha\sin\alpha(\cos\alpha-\sin\alpha)$