Since the angle 225° is in the third quadrant, the reference
angle formula is Ar=Ac-180°. Ar = 225° − 180°
Ar=225°-180°
The reference angle is Ar=45°
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Answer:
The average is the same as the Mean
Step-by-step explanation:
Answer:
665 bagels in 19 hours
Step-by-step explanation:
They can make 350 bagels in 10 hours so
350÷10=35 which means they can make 35 per hour. (the rate per hour)
35×19=665
so they can make 665 bagels in 19 hours
Answer:
1331:216
Step-by-step explanation:
Given the ratio of the lengths of two similar solids as a:b
The ratio of the surface areas = 
The ratio of the volume = 
We are given that the ratio of the surface areas of two similar geometrical solids is given by 121:36
Therefore:
Since the ratio of the lengths is 11:6
The ratio of their volumes = 
=1331:216
The ratio of the volume of the two similar geometrical solids is 1331:126.
Answer: (B) stratified random sampling.
Step-by-step explanation:
- A stratified random sampling technique is a sampling technique in which the researcher includes the participants from each group.
- He divides the entire population into groups and then he randomly selects participant from that groups of known as strata .
Here, Math department can send 6 people to a national convention and they would like to send 4 students out of 30 and 2 faculty members out of 6.
The department is considering both groups or strata of Students and faculty members as well.
And they selected 4 students randomly out of 30, and then 2 faculty members are randomly selected from the six.
Therefore , This is an example of stratified random sampling.
Hence, the correct option is (B) stratified random sampling.
