Answer:
Which of the following sampling techniques is the most likely to produce a random sample, representative sample of all students at a high school?
A. Choosing every 10th name on the student roster
B. Choosing every 10th student arriving in a 9th grade homeroom
<u>C. Choosing the first 100 students who arrive at school
</u>
D. Asking students to call a phone number to answer survey questions
Step-by-step explanation:
Well i did this in my notes and i found this
Answer:
B
Step-by-step explanation:
34x and 0.75x are not the same expression.
Answer:
Enzo wins 5 tickets from every game
Beatrix wins 11 tickets
Both won same no of tickets
So min no of games Enzo have played = 5(11)=55
We know that
applying the law of cosines
a² = b²+ c²<span> – 2*b*c*cos(A)
cos (A)=[b</span>²+c²-a²]/[2*b*c]
in this problem
a=10
b=17
c=18
so
cos (A)=[17²+18²-10²]/[2*17*18]-----> cos (A)=0.8382
A=arc cos (0.8382)-----> A=33.05°-----> A=33°
the answer is
33 degrees
