Answer:
Cubes always involve multiplying a number by itself three times, so if the number is negative the cube will always be negative (and if the cube is negative, its cube root has to be negative too).
Step-by-step explanation:
9 x 9 = 81
81 - 21 = 60
60 / -6
10
The first week is 10 x 1.4.
The second week is that answer x 1.4 etc.
So you are only multiplying the first week by 10.
{ [ 10 x 1.4) x 1.4] x 1.4}. Since multiplication is commutative, we don’t need the grouping symbols...
10 x 1.4 x 1.4 x 1.4
That s answer A
it's 17/42... theres no whole number
Answer:
80 Students were surveyed.
Step-by-step explanation:
To find the answer we need to do a Rule of Three. The Rule of Three is a Mathematical Rule that will help us to solve problems based on proportions.
1. I know that a 65% of students are 52 students. I need to know how many students represent that 100%.
2. So if 52 students mean _____ 65%
X students mean _____ 100%
Pay attention here. We have to put the same elements in the same columns. Students with studients and percentage with percentage.
3. Now I have to cross these details. I have to multiple 52*100. So:
52*100= 5200
4. Then divide that result by 65.
5200/65= 80
5. So 80 is the total number of students surveyed.