2.21 x 10^17 and the answer is 2.21e+17
Answer:
Step-by-step explanation:
3(1-4)=2(2-6)
3-12=4-12
-9= -8
Is there a variable?
60 mins = 1 hr so, 240 minutes = 4 hrs
45 people = 20 minutes
? = 240 minutes
cross multiply
240 × 45 ÷ 20 = 540
540 people could ride the ferris wheel in 4 hours.
6(4x + 5) = 3(x + 8) + 3
24x + 30 = 3x + 24 + 3
24x + 30 = 3x + 27
24x - 3x = 27 - 30
21x = - 3
x = -3/21
x = - 0.143 <==
Answer:
Option C
Step-by-step explanation:
The chi square test of independence is used to determine if there is a significant association between two categorical variables from a population.
It tests the claim that the row and column variables are independent of each other.
The degrees of freedom for the chi-square are calculated using the following formula: df = (r-1) (c-1) where r is the number of rows and c is the number of columns.