Answer: B. GCF of 72 and 81 is 9.
C. 72+81 = 9(8+9)
Step-by-step explanation:
The greatest common factor of two or more numbers is the highest number that divides all of them.
Given numbers : 72 and 81
Prime factorization of 72 and 81:
72 = 2 x 2 x 2 x 3 x 3
81= 3 x 3 x 3 x 3
GCF(72,81) = 3x 3 =9
Consider 72+81 = 9 x 8 + 9 x 9 [72= 8 x 9, 81 = 9 x 9]
= 9(8+9)
Hence, B. GCF of 72 and 81 is 9.
C. 72+81 = 9(8+9)
Mean is the average
basically you add the scores together then divided the sum by the number of quizzes she had so
82+64+73+91+85=sum=395
then divide by number of quizes
there are 5 scores so 5 quizes
395/5=79
the mean is 79
Answer:
36
Step-by-step explanation:
15 percent *240
= (15/100)*240
= (15*240)/100
= 3600/100 = 36
The linear equation in slope - intercept form that models the total cistern of the rental over times is
y= 30x + 20
Answer: The length of the second arc is 12 feet.
Step-by-step explanation:
Since we know that
A rope is swinging in such a way that the length of the arc is decreasing geometrically,
Length of first arc = 18 feet
Length of third arc = 8 feet
Let the length of second arc be x
As we know that
Hence, the length of the second arc is 12 feet.