1 meter = about 39 inches.
So you would need to do 3.5 * 39 = 136.5 is your answer
30 is the answer
Basically half of 2/3 is 1/3 and 1/3 is $10 which is his lunch money. So $10 x3 =30 and that’s the answer someone pls help double check if I’m wrong
Answer:
f(x)^-1 = 3x-3/x
Step-by-step explanation:
f(x) =-3/x-3
y= -3/x-3
x=-3/y-3
-3= (y-3)x
-3= xy-3x
-xy=-3x + 3
y= -3x +3/x
y= 3x-3/x
f(x)^-1 = 3x-3/x
You can do a table for several values of tha angle (Ф).
But first you should remember some properties of the sine function.
1) Range: sine function goes from - 1 to + 1.
That means that 2 sin (πФ) goes from - 2 to + 2.
2) sine(0) = 0 => 2sin(π0) = 0
3) sine (π/2) = 1 =>
Ф = 0.5 => sin(π*0.5) = sin(π/2) = 1
=> 2sin(π*0.5) = 2
3) sin (-π/2) = - 1 =>
Ф = -0.5 => 2sin(-π/2) = -2
4) Periodicity:
The period of sine function is 2π
=> sin (πФ+ 2π) = sin(πФ)
Now you can do the table
Ф πФ sin(πФ) 2sin(πФ)
-1 -π sin(-π) 2sin(-π) = 0
-5/6 -5π/6 sin(-5π/6) 2sin(-5π/6) = -1
-1/2 -π/2 sin(-π/2) 2sin(-π/2) = -2
-1/6 -π/6 sin(-π/6) 2sin(-π/6) = -1
0 0 sin(0) 2sin(0) = 0
1/6 π/6 sin(π/6) 2sin(π/6) = 1
1/2 π/2 sin(π/2) 2sin(π/2) = 2
5/6 5π/6 sin(5π/6) 2sin(5π/6) = 1
1 π sin(π) 2sin(π) = 0
Then you can see that one cycle is from Ф = -1/2 to Ф = 1/2
And so you know that you can draw the function in that interval [-1/2, 1/2] and you already have some conspicuos values (from -2 to +2).
You can add some other points to do a better sketch.