Yes. The 100 - 85 = 15, meaning 15% of parents said yes. 85 > 15
If you're supposed to find the measure of the arc:
The minor arc CD has the same measure as the central angle it subtends. In this case, arc CD has measure 50º. In radians, that's
50º * (π/180 rad/º) = 5π/18 rad
If you instead meant to ask about finding the length of the arc CD, recall that arc lengths and their subtended central angles occur in a fixed ratio equal to the ratio of the circle's total circumference to 2π rad. In other words, if <em>L</em> is the length of the minor arc CD, then
<em>L</em> /(5π/18 rad) = 2π (7 cm) / (2π rad)
==> <em>L</em> = 35π/18 cm
(Notice that arc measure is given radians, while arc length is given in cm, which is why I offer two different answers here.)
I don't know how to solve for the measures of each angle but I can tell what type of angles each of these are. (a) obtuse angle, (b) not sure, (c) not sure, (d) The relationship between the angles BA and BE is that together they form a right angle. And #3, I cannot helps with. Very, sorry that I was not able to answer all of your question. Hope this helps!
Answer: 1.18
Step-by-step explanation:
Z = (x - mean) / standard deviation
Z = (85 - 71.4) / 11.5
Z = 13.6 / 11.5 = 1.18
