the answer is A 2.3
in order to solve this problem you have to devide 9 by 4 and you get 2.25 then round 2.25 to 2.3 and that is your answer
hope this helps
~~apple
Answer:
Step-by-step explanation:
In this problem we have a exponential function of the form
where
f(x) is the remaining mass of the element in grams
x is the time in minutes
a is the initial value (y-intercept of the exponential function)
b is the base
r is the rate
In this problem we have
---> is negative because is a decay's rate
substitute
The exponential function is equal to
For x=15 minutes
substitute in the function
Answer:
28.5 ft²
Step-by-step explanation:
shaded area = area of triangle minus area of rectangle
shaded area = (1/2)bh - LW
base of triangle = 5 ft + 4 ft = 9 ft
height of triangle = 3 ft + 6 ft = 9 ft
shaded area = (1/2)(9 ft)(9 ft) - (4 ft)(3 ft)
shaded area = 40.5 ft² - 12 ft²
shaded area = 28.5 ft²
Mr khan jogged 5 4/10's of a mile in 1 hour, i believe.
Answer:
Step-by-step explanation:
Let X be the mean lifespan of automobile tire
X is N(36,000, 2450)
The Z scores are calculated as (x-36000)/2450
x x-36000 Z=(x-36000)/2450
34000 -2000 -0.816326531 =-0.82
38000 2000 0.816326531 =0.82
31000 -5000 -2.040816327 =-2.04
No only if beyond |3| z score is there we say unusual
For 33550 miles
Z = -1
P(Z<-1) = 0.3413
So percentile is 34.13
For 36000 , z=0 so 50th percentile