For the triangle, you do 1/2*b*h
Where b is the base and h is the height
So, 1/2*9*7 which is 31.5
For the rectangle, we use the formula l*w
Where l is the length and w is the width
So we do 9*12 which is 108
The w e plus both values together to get the total area of the figure
108+31.5 is 139.5 ( which is roughly 139)
So, the answer to your question is option c
Answer:
30/11 > p
Step-by-step explanation:
-7p-4>26p-94
Add 7p to each side
-7p+7p-4>26p+7p-94
-4 > 33p -94
Add 94 to each side
-4+94 > 33p-94+94
90 > 33p
Divide each side by 33
90/33 > 33p/33
30/11 > p
Answer: P(x ≥ 47) = 0.25
Step-by-step explanation:
Since the distribution of the life expectancies of a certain protozoan is normal, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = life expectancies of the certain protozoan.
µ = mean
σ = standard deviation
n = number of samples
From the information given,
µ = 46 days
σ = 10.5 days
n = 49
The probability that a simple random sample of 49 protozoa will have a mean life expectancy of 47 or more days is expressed as
P(x ≥ 47) = 1 - P(x < 47)
For x = 47
z = (47 - 46)/(10.5/√49) = 0.67
Looking at the normal distribution table, the probability corresponding to the z score is 0.0.75
P(x ≥ 47) = 1 - 0.75 = 0.25
