Numbers BETWEEN 8 and 15 are: 9, 10, 11, 12, 13, 14
Out of these 6 numbers 3 are even.
P(even) = 3/6 = 1/2
Here is the equation:
⇒
You need to get "x" by itself so minus 3 from each side
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⇒
Divide 8 by 2
÷
x=4
So each 4 is equivalent to 4
Lets check:
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⇒
So that means that Marcus practiced the piano for 4 hours and Donnel practiced for 7
Special prpoerty of 45-45-90 triangle
if the legs are x then the hyptonuse is x√2
18=hyptonuse=x√2
18=x√2
divide both sides by √2
18/√2
make denomenator nice
times by √2/√2
(18√2)/(2)
9√2
one leg is 9√2 cm
Answer:
3.66519
Step-by-step explanation:
Converting between degrees and radians is pretty easy. To convert radians to degrees, multiply by 180° and divide by ∏. To convert degrees to radians, divide by 180° and multiply by ∏.
Hello,
We have the equation:
( Cosx + Cosx.tg^2x).Secx
We know too:
Tgx = Senx/Cosx
Then,
Cosx.Tg^2x = Cosx . Sen^2x / cos^2x
= Sen^2x/cosx
Then, we stay with:
(Cosx + Sen^2x/Cosx) . Secx
There is a trigonometric property that says:
Sec x = 1 / Cosx
Then, this mean:
Secx = 1 / cos x
Then,
( Cosx + Sen^2/Cosx). 1/Cosx
Applying the distributive:
Cosx . 1/Cosx + Sen^2x / Cos^2x
Simplifying Cos x/ cosx
1 + Sen^2x / Cos^2x
Rewrinting Sen^2x/Cos^2x = Tg^2x
Then us stay:
= 1 + Tg^2x = Sec^2x <=> I hope this has helped
