Answer:
See below
Step-by-step explanation:
1. 12
2. 15 [3*12-21 = 15]
3. 24 [3*15-21 = 24]
4. 51 [3*24 - 21 = 51]
Explanation:
The number of times the 6-sided number cube will be rolled will is

Let the numbers greater than 4 be represented below as


The number of sample space will be

The probability of rolling a number greater than 4 will be calculated below as

Hence,
To calculate the number of times a number greater than 4 will be rolled will be calculated below as

Hence,
The final answer is
Answer:
Use your brain
Step-by-step explanation:
Given:
420 tropical fishes
angel fish = x
parrot fish = 6x
x + y = 420
y = 6x Choice D.
x + y = 420
y = 6x
x + 6x = 420
7x = 420
x = 420 / 7
x = 60 number of angelfish
y = 6x
y = 6(60)
y = 360 number of parrot fish