Answer:
n = 2.8
Step-by-step explanation:
We need to solve the equation 5n+7 =21 to find the value of n.
Adding -7 on both sides
5n +7 -7 = 21 -7
5n = 14
Dividing both sides by 5
5n/5 = 14/5
n = 14/5
n = 2.8
Answer:
a) x = 4 cm
Step-by-step explanation:
x + 2x + 2x = 20 cm
5x = 20
x = 4 cm
X+y=4 :x=4-y,yR
x-y=6:x=6+y,yR
Answer:
l = 15 and w = 25
Step-by-step explanation:


Adding both equations


subtracting both equation


Hope it helps..........
BRAINLIEST PLEASE
Answer:
The domain would be given by <u>D = {X ≥ 2} X = [2, Z].</u> Since the variable Z is the number of children in the school. And the 6 children should not survey the same person, it would be Z / 6 for each interviewer.
Step-by-step explanation:
- If the group of children surveys more than 2 classmates, it means that the number with which the survey begins is 12 students.
And since the maximum number of students in the school is given by the variable of Z, then Z is the number with which the domain closes.
The rank would be given by the set of [2, Z]
Z / 6 being the maximum number of children surveyed by 1 interviewer.