Answer: D.) 3
Step-by-step explanation:
Given: Mean diameter:
Standard deviation:
The required number of standard deviations is given by :-
Hence, a beach ball with a diameter of 31.9 cm is 3 standard deviations differ from the mean.
Answer:
see below
Step-by-step explanation:
start with cos (x)
amplitude 4
4 cos x
midline 2
4 cos (x ) + 2
period of 1 : 2 pi / 1 = 2 pi
multiply x by 2pi
<u> 4 cos ( 2 pi x) + 2 </u>
Answer:
loss: 2 points
Step-by-step explanation:
Mathematically: +4 - 6 = -2. The "net" loss was 2 points.
Answer:
57.6°
Step-by-step explanation:
It is always helpful to draw a picture. Also, you need to memorize all the definitions of the trig functions. For example,
sine of an angle = opposite side/hypotenuse
In your case, SQ is opposite side to angle R and QR is the hypotenuse
Therefore, sin R = 6.5/7.7
m∠R = arcsin (6.5/7.7) = 57.6°
Answer:
2 1/2
Step-by-step explanation:
2 1/2 = 5/2 = 2.5
now you can see that 2.5 > 2.3 so 2 1/2 is greater