Answer:
x = 4 root square 3
Step-by-step explanation:
sin60° = x/8
x = 8×sin60° = 4 root square 3
Range of y = -3 cosx -1 is -4 < y < 2
Answer:
a) 9*π or approx 28.26
b) ∡CRB=100°
Step-by-step explanation:
As known for secants crossing each other inside the circle is coorect the following:
BR*RD=AR*RC
=> 3*RD=4*4.5
RD=6
The diameter of the circle with center P is BD=BR+RD=3+6=9
So the radius of the circle is D/2=9/2=4.5
As known the circumference of any circle can be calculated as
C=2*π*r , where r is the circle's radius
So C=2*4.5*π=9*π= approx 3.14*9=28.26
b) ∡CRB=∡ARD= (arcBC+arcAD), where arcBC and arcAD smaller arcs
BD is the circle's diameter, so arc BD=180°
So arcBC=180°-arcCOD=180°-100°=80°
Similarly arcBD=180°
arcAD=180°-arcBSA=180°-60°=120°
∡CRB= (80°+120°)/2=100°
Answer:
A constant is a number that stays the same. A variable is number that doesn't remain the same.
Answer:
1.666667 headphones per hour (simplify this)
Step-by-step explanation:
divide the top and bottom by 3 and you should get your answer
