Answer:
Step-by-step explanation:
To find the number of different ways she can stack 3 of them in a tower, we need to use the formula:

n = 4
k = 3





Answer:
26.4
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
Long but I got a lot done so i'm proud of myself. How was your day?
Inversely variation means xy = c, where c is a constant
Since when y = 12 x = 5, then c = 12*5 = 60
So xy = 60
Now when x = 3, y = 60/3 = 20
Answer:
333.3
Step-by-step explanation:
45 % = 150
100% = <u>100% x 150</u>
45%
= 333.3
non of the answers presented makes sense as 45 % = 150 the number (100%) should be more than 150