2 years ago

MY STORE is selling $30 jeans for $15. What is the discount percentage?

Mathematics

2 answers:

Vinil7 [7]2 years ago

6 0

Answer:

50% off

Step-by-step explanation:

15 is half of 30 so it would be 50%

myrzilka [38]2 years ago

5 0

15/30 = 0.5
Convert 0.5 to a percentage.
0.5 = 50%
Answer: 50%

Good luck!

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Proove that <br>1/1-sin theta + 1/1+cos theta = 2×sec square theta

Rina8888 [55]

Step-by-step explanation:

We need to prove that,

$\dfrac{1}{1-\sin\theta}+\dfrac{1}{1+\sin\theta}=2\times \sec^2\theta$

Taking LHS,

$\dfrac{1}{1-\sin\theta}+\dfrac{1}{1+\sin\theta}\\\\=\dfrac{(1+\sin\theta)+(1-\sin\theta)}{(1-\sin\theta)(1+\sin\theta)}\\\\=\dfrac{2}{1-\sin^2\theta}\\\\\text{As}\ 1-\sin^2\theta=\cos^2\theta\\\\=\dfrac{2}{\cos^2\theta}\\\\\text{As}\ \dfrac{1}{\cos^2\theta}=\sec^2\theta\\\\=2\sec^2\theta\\\\=RHS$