Answer:
x = -27
Step-by-step explanation:
4x+27=3x
Subtract 3x from both sides of the equation.
==> 4x + 27 -3x = 3x - 3x
==> 4x - 3x + 27 = 0
==> 1x + 27 = 0
Subtract 27 from both sides,
==> x + 27 - 27 = 0 - 27
==> x = -27
Answer: True
Step-by-step explanation: 20% can also be written as 0.2 and if you know the number then you would multiply it by 0.2, then if you needed to add 11 that is exactly how you would write that equation
Answer: B
Step-by-step explanation:
1/ 816
Step-by-step explanation:
Step 1 :
Given
Total number of students in the school = 18
Number of students randomly selected = 3
Step 2 :
Number of ways in which 3 students can be selected out of 18 students is
C(18,3) = 18! /(3!(*18-3)!) = 18*17*16/3*2*1 = 816
Number of ways in which 3 students are selected and they are the youngest = 1
Hence the probability of selecting 3 youngest students from the available students is 1/ C(18,3) = 1/ 816
