Answer: 2.15
Step-by-step explanation:
2 stands for the hours and 15 stands for the minutes.
Answer:
![-(7+2\sqrt{10})/3](https://tex.z-dn.net/?f=-%287%2B2%5Csqrt%7B10%7D%29%2F3)
Step-by-step explanation:
we have
![\frac{\sqrt{2}+\sqrt{5}}{\sqrt{2}-\sqrt{5}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B2%7D%2B%5Csqrt%7B5%7D%7D%7B%5Csqrt%7B2%7D-%5Csqrt%7B5%7D%7D)
we know that
We can rationalize the denominator by multiplying both the numerator and the denominator by the conjugate of the denominator
so
![\frac{\sqrt{2}+\sqrt{5}}{\sqrt{2}-\sqrt{5}} *\frac{\sqrt{2}+\sqrt{5}}{\sqrt{2}+\sqrt{5}}=( \sqrt{2}+\sqrt{5})^{2}/(2-5)\\ \\=(2+2\sqrt{10}+5)/(-3)\\ \\(7+2\sqrt{10})/(-3)\\ \\=-(7+2\sqrt{10})/3](https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7B2%7D%2B%5Csqrt%7B5%7D%7D%7B%5Csqrt%7B2%7D-%5Csqrt%7B5%7D%7D%20%2A%5Cfrac%7B%5Csqrt%7B2%7D%2B%5Csqrt%7B5%7D%7D%7B%5Csqrt%7B2%7D%2B%5Csqrt%7B5%7D%7D%3D%28%20%5Csqrt%7B2%7D%2B%5Csqrt%7B5%7D%29%5E%7B2%7D%2F%282-5%29%5C%5C%20%5C%5C%3D%282%2B2%5Csqrt%7B10%7D%2B5%29%2F%28-3%29%5C%5C%20%5C%5C%287%2B2%5Csqrt%7B10%7D%29%2F%28-3%29%5C%5C%20%5C%5C%3D-%287%2B2%5Csqrt%7B10%7D%29%2F3)
To figure out what a fraction is as a decimal u would do the top divided by the bottom
For this fraction it would look like this,
8 divided by 9 which would get you 0.88888888888
So your decimal is 0.889
Its not 0.888 because with decimals since a typical decimal is show as 2-3 numbers it would be rounded up to keep it as 3 numbers or less. so this would be 0.889 or if that doesnt work 0.888 with a line over the last 8.
Circumerence=2pi(r)
circumerence=65pi
65pi=2pir
divide both sides by pi
65=2r
divide both sides by 2
32.5=r
area=pir^2
area=pi32.5^2
area=pi1056.25
area=1056.25pi
You have to add a 1 underneath it so it's reciprocal is 1