-3m ??? Your question is not well asked
Slot method
5 letters
1st slot=5 options
2nd slot=4 options (1 went ot first slot)
3rd slot=3 options (1 went to 2nd)
4th slot=2 options
5th slot=1 option
5*4*3*2*1=120 ways
The answer is: [A]: "6" .
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Explanation:
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Using the Pythagorean theorem to solve for the hypotenuse of a right triangle:
a² + b² = c² ;
in which "c" is the length of the "hypotenuse" (for which we are to solve);
& "a" and "b" are the lengths of the other 2 (two) sides.
In this case, "a" and "b" are "equal lengths" ;
that is: a = b = 3√2 ;
So "(3√2)² + (3√2)² = c² " ; Solve for "c" ;
↔ c² = (3√2)² + (3√2)² ;
→ c² = 2*(3√2)² = 2 * (3²) * (√2)² ;
= 2 * 9 * 2 ;
= 18 * 2 = 36 ;
→ c² = 36 ;
Take the positive square root of each side of the equation ; to isolate "c" on one side of the equation ; & to solve for "c" (the length of the hypotenuse);
→ +√(c²) = +√36 ;
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→ c = 6 ; which is: "Answer choice: [A]: "6" .
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Answer:
Step-by-step explanation:
We are to show that 
<u>Proof:</u>
From trigonometry identity;
From trigonometry, 2sinAcosA = Sin2A
Also note that sin(B-C) = sinBcosC - cosBsinC
sin420cos140 - cos420sin140 = sin(420-140)
The resulting equation becomes;
= 
Answer:
Step-by-step explanation:
Steps to find the inverse function:
1) replace f(x) with "y"
2) solve for x:
3) replace "x" with 
, and y with x:
