Z-score for 30 = (30 - 25) / 5.8 = 0.8621
z-score for 20 = (20 - 25) / 5.8 = -0.8621
:
Note find probabilities from z-tables
:
Probability ( 20 < X < 30 ) = 0.8051 - 0.1949 = 0.6102
Answer:
10.7cm
Step-by-step explanation:
x^2= 115
x = √115
x = 10.7
Answer:
42+106=x
148=x
Step-by-step explanation:
Answer:b
Step-by-step explanation:
98cm^2 - bigger triangles are 28 each, bottom one is 14. (28 x 3) + 14=98
