<h3>
Answers: B and C</h3><h3>
Acceleration and velocity</h3>
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Explanation:
Distance is a scalar. It's simply a single number. It does not include a direction. We can rule out choice A. If you wanted direction connected to distance, then it would form a displacement vector.
Acceleration is a vector because velocity is a vector, and vice versa. The two are tied together. The acceleration is the change in velocity. You can think of it as acceleration = velocity/time.
Speed is not a vector. It's a single value just like distance is. If you want to have speed tied to a direction, then you would form a velocity vector.
Answer:
38 or 76 but i think its 76
Step-by-step explanation:
You divide each cost to the package for A. to find the better price
Answer:
You will need to sample at least 3108 students.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
In this problem, we have that:
99% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The margin of error is:
How many students will I need to survey if I want to estimate, with 99% confidence, the true proportion to within 2%?
You need a sample size of at least n.
n is found when M = 0.02. So
You will need to sample at least 3108 students.
Answer:
-12 should be the answer :D
Step-by-step explanation:
Please mark me as brainliest :)
