Answer:
a- 30
Step-by-step explanation:
Answer:
P(4.7≤x≤5.3)≈0.6827≈68.27%
Step-by-step explanation:
Notice that 4.7 is 1 standard deviation below the mean (μ) and 5.3 is 1 standard deviation above the mean. Thus, by the Empirical Rule, ±1σ represents about 68.27% of the data in a normal distribution, meaning that P(4.7≤x≤5.3)≈0.6827
C
We can see that both triangles occupy exactly half of the rectangle each, so the area of one triangle is half of the area of the rectangle
Answer: w = 30
Step-by-step explanation: A triangle is 180 degrees, always. One angle is 60 and the other above is 90. We add them together and get 150. Subtract it from 180 and we get 30 degrees.
P.S.: I'm sorry that I put only w, that's the only one I could work out . Also sorry if I'm wrong, maths is not my very strong subject.