No, -(5/11) is equivalent to -5 all over 11 so -5/11. You cannot change the denominator
There are 8 possible ways to flip 3 fair coins, because there is only one way to flip heads on the first 2 and tails on the third it would be 1/8
Answer:
The answer is 20
Step-by-step explanation:
10/8 =20/10
Answer:
Step-by-step explanation:
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In the question ,
L.H.S. = ![\sin x (\sec x + cosec \: x)](https://tex.z-dn.net/?f=%5Csin%20x%20%28%5Csec%20x%20%2B%20cosec%20%5C%3A%20x%29)
R.H.S. = ![\tan x + 1](https://tex.z-dn.net/?f=%5Ctan%20x%20%2B%201)
Lets solve L.H.S. first.
![\sin x (\sec x + cosec \: x)](https://tex.z-dn.net/?f=%5Csin%20x%20%28%5Csec%20x%20%2B%20cosec%20%5C%3A%20x%29)
![=> \sin x( \frac{1}{\cos x} + \frac{1}{\sin x} )](https://tex.z-dn.net/?f=%3D%3E%20%5Csin%20x%28%20%5Cfrac%7B1%7D%7B%5Ccos%20x%7D%20%2B%20%5Cfrac%7B1%7D%7B%5Csin%20x%7D%20%29)
![=> \frac{\sin x}{\cos x} + \frac{\sin x}{\sin x}](https://tex.z-dn.net/?f=%3D%3E%20%5Cfrac%7B%5Csin%20x%7D%7B%5Ccos%20x%7D%20%2B%20%5Cfrac%7B%5Csin%20x%7D%7B%5Csin%20x%7D)
![=> \tan x + 1](https://tex.z-dn.net/?f=%3D%3E%20%5Ctan%20x%20%2B%201)
∴ L.H.S. = R.H.S. (Proved)
Answer:
$57.75
Step-by-step explanation:
If 11 books cost $42.35,
11b=42.35
b=42.35/11
b=3.85
15 books will cost 15b.
15b
= 15*3.85
= 57.75.
15 Books will cost $57.75.