Answer:
A. 2w-4
B. 12
Step-by-step explanation:
A. (9w+2)-(7w+6) Distribute the negative
9w-7w+2-6 Combine like terms
2w-4
B. 2w-4 Substitute 8 for w
2(8)-4 Multiply 2x8
16-4 Subtract 16-4
12
Kilo means 1000 so 1 kiometer=1000 meter
so every 1000 meter=1 kilometer
to convert,, just divide meters by 1000 and get km
2950/1000=2.95km
Answer:
Option a is right
Step-by-step explanation:
Given that as part of a research project on student debt at TWU, a researcher interviewed a sample of 35 students that were chosen at random concerning their monthly credit card balance.
Sample average = 2573
Variance = 4252
Sample size = 35
STd deviation of X = 
Score of student selected at random X=1700
Corresponding Z score = 
Rounding of we get Z score = -13.4
option a is right