90 cm because ................................
Answer:
first you add the 2x and the 3x together then when you get your answer when you add them then you dived your answer and the 15 together
Step-by-step explanation:
hope this helps i didn't put the answers cause i didn't think you wanted them cause all you put was how do i find x
Answer:
18.75
Step-by-step explanation:
75/4=18.75
Answer: A committee of 5 students can be chosen from a student council of 30 students in 142506 ways.
No , the order in which the members of the committee are chosen is not important.
Step-by-step explanation:
Given : The total number of students in the council = 30
The number of students needed to be chosen = 5
The order in which the members of the committee are chosen does not matter.
So we Combinations (If order matters then we use permutations.)
The number of combinations of to select r things of n things = 
So the number of ways a committee of 5 students can be chosen from a student council of 30 students=

Therefore , a committee of 5 students can be chosen from a student council of 30 students in 142506 ways.