Answer:
28.3 square inches
Step-by-step explanation:
Use the area of a circle to determine its area:
Therefore, the area of a circle with a radius of 3 inches is 28.3 square inches
Answer:
11
Step-by-step explanation:
square of 44 + 77
1st step = go with the number that is inside the square
that will 44+77 = 121
now using the square root , you may think about which number multiple by himself give you 121
11×11 =121
so square root of 121 = 11
Isolate the x. Do the opposite of PEMDAS.
−4 ≤ 11 −3x
First, subtract 11 from both sides
-4 (-11) ≤ 11 (-11) - 3x
-4 (-11) ≤ - 3x
-15 ≤ - 3x
Isolate the x. Divide -3 from both sides. Remember to flip the sign.
(-15)/-3 ≤ (-3x)/-3
-15/-3 ≤ x
5 ≥ x
x≤5 is your answer
hope this helps
Answer:
C. 95%
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 1189 points, standard deviation of 397 points.
Percentage between 395 and 1983 points?
395 = 1189 - 2*397
1983 = 1189 + 2*397
So within 2 standard deviations of the mean, which by the Empirical Rule is approximately 95%, and the answer is option C.
Answer:C
Step-by-step explanation:
I am not that sure.. but I think the answer is C.
