3 years ago

Help pls it’s due soon make sure to follow the steps I don’t get it

Mathematics

1 answer:

amm18123 years ago

6 0

The final answer that i got from this was -x-13

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Shakeela is planning to buy a pair of pants that have an original price of $51. The pants are on sale for 50% off and the sales

Mila [183]

Answer:

C) $25 + $1.25

Step-by-step explanation:

1. 51 x .5 = 25.5

2. 25.5 x .05 = 1.275

25 + 1.25 ≈ 25.5 + 1.28

6 0

4 years ago

1 + 5sin^2x= 7sin^2x solve trig equation. Can you show me how to solve this trig equation?

pantera1 [17]

Answer: $x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$

Step by step:

$1 + 5\sin^2x= 7\sin^2x\\\sin^2 x\rightarrow z\\1 + 5z = 7z\\2z = 1\\z = \frac{1}{2}\implies \sin^2 x = \frac{1}{2}\\|\sin x| = \frac{1}{\sqrt{2}}\\\sin x = \pm\frac{1}{\sqrt{2}}=\pm\frac{\sqrt{2}}{2}\\\implies x = \frac{\pi}{4}\pm k\frac{\pi}{2}\,\,\,\,\,\,k=\{0,1,2,...\}$