The given triangle is a <em><u>Right angled triangle</u></em>,
So, by applying <em><u>Pythagoras theorem</u></em><em><u> </u></em><em><u>:</u></em>
=》
=》
=》
=》
hence, value of c = 15 mi
The way I see it is like this:
He ended with $42.15 -- the last thing that he did before that was buy the umbrella
$42.15 + $23.75 (umbrella) = $65.90
The next thing backwards in order is that he spent "half of his remaining money on a painting", so what he has left is one half what he had before he bought the painting.
$65.90 + $65.90 (cost of the painting) = $131.80
Before that, he spent $25 on dinner and $20 on a cab. So we add those all up:
$131.80 + $25 (dinner) + $20 (cab) = $176.80 (how much money he had at the start of the weekend)
To write it as a single equation:
$42.15 = -$23.75 + (-$25.00 + -$20.00)/2
-7 is the answer because first you have to divide 100 by 20 and u get 5. -6 times 2 is -12. Add that to 5 and you get -7.
Answer: 0.125, 2/3, 3/4, 0.78, 5/6, 1.8
Answer: (√2 - √6)/4
Step-by-step explanation:
I am going to use the sum formula: sin(A + B) = sin A cos B + cos A sin B
Let's say A = 135° and B = 30°
sin(135° + 30°) = sin(135°) * cos(30°) + cos (135°) * sin(30°)
= (√2)/2 * 1/2 + (-√2)/2 * (√3)/2
= (√2)/4 + (-√6)/4
<em>= (√2 - √6)/4</em>