Answer:
b = 12
Step-by-step explanation:
Complementary angles add to 90 degrees
a+b = 90
78+b = 90
Subtract 78 from each side
78-78+b = 90-78
b = 12
15 × 60 = 900
900 × 22 = 19800
The answer is 19800 screws
The choices can be found elsewhere and as follows:
<span>a. points on a line
b. random points
</span>c. points on a horizontal line <span>
d. points on a curvy line
I believe the correct answer is option D. The </span><span>data represented on a scatterplot that depicts an exponential model would be points on a curvy line. Hope this answers the question. Have a nice day.</span>
Answer:
Simple random sampling
Step-by-step explanation:
Simple random sampling is a subdivision of a sample chosen from a population. Individuals are randomly chosen by chance and each individual possess the same characteristics as every other person in the population. It is a a surveying technique that is unbiased.
The idea of this sampling method is that every object has an equal chance of being chosen.
If the researcher evaluates 200 students out of the population and make sure the sample reflects the population, the sampling method used is simple random sampling.
