Answer:
1 is 13
2 is 12
3 is 18
Step-by-step explanation:
Y – 3x = 7
y -3x +3x = 7+3x
y = 7+3x
21 + 9x = 3y
21 + 9x = 3(7+3x)
21 + 9x = 21 + 9x
The answer is B.There are an infinite number of solutions.
Answer:
Step-by-step explanation:
z value of 14.9 = (16.3 - 14.9) / 2
= 0.7
= .7580
z value of 12.9 = (16.3 - 12.9) / 2
= 1.7
=.9554
Required probability = .9554 - .7580
= .1974
or 19.74 % .