Answer:
-77
Step-by-step explanation:
-57-(-13+33)
=-57-20
=-77
3 meters per minute is the rate.
7.5/3 = how much minutes he walked.
7.5/3 = 2.5
Answer: It walked for 2.5 minutes.
Answer:
0.8808
Step-by-step explanation:
The objective is to calculate the probability of:
P(-1.20 ≤ z ≤ 2.64)
i.e. the probability that is the area between two z-values.
Thus;
P(-1.20 ≤ z ≤ 2.64) = P(z ≤ 2.64) - P( z ≤ 1.20)
From z table;
P(-1.20 ≤ z ≤ 2.64) = 0.9959 - 0.1151
P(-1.20 ≤ z ≤ 2.64) = 0.8808
We can see the shaded area under the standard normal curve from the image attached below.
Answer:
2/3 * 1/2+ 3/4 /1+ 1/6
=1.25
1.25
Step-by-step explanation: