Answer:
94cm
Step-by-step explanation:
wingspan length
60 meters 70.5 m
----------------- = ----------------
80 cm x
Cross multiply
(60 m)x = (70.5 m)(80 cm)
Solve for x by dividing both sides of equation by 60 m:
x = (70.5 m)(80 cm) / (60 m) = 94 cm
The length of the model is 94 cm.
Answer:
9
Step-by-step explanation:
3/4 = x/12
Cross-multiply: 36 = 4x
x = 9
Answer:
a) the value of 135 because it is not greater than 136.5
Step-by-step explanation:
Given that
n = sample size =85
Mean = 146
std dev =34
Std error of sample = 34/sqrt 85
= 3.6878
99% z critical value = 2.58
Margin of error = ±9.515
Confidence interval lower bound = 146-9.515 = 136.485
Upper bound = 146+9.515 =155.515
Hence we find that 135 is less than lower bound, hence 135 does not lie within 99% confidence interval
a) the value of 135 because it is not greater than 136.5
Regions numbered 1 thru 9
P(1st number is a 3) = 1/9
P(2nd number is a 7) = 1/9
P(both) = 1/9 * 1/9 = 1/81 <=