Answer:
w = 9.6cm
Step-by-step explanation:
Similar Triangles
= 
20*w = 16*12
w =
= 9.6
w= 9.6 cm
Answer:
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 108
Sample mean,
= 107
Sample size, n = 110
Alpha, α = 0.02
Population standard deviation, σ = 7
Formula:
Putting all the values, we have

The test statistic is -1.50
You can put 20 objects in 4 rows
Can you search it as a pdf and some answers should pop of hope this helps