<span> 4a + (–6b) – 3a + 2b
= 4a - 6b - 3a + 2b
=a - 4b
answer
</span><span> B. a – 4b</span>
Answer:
26
Step-by-step explanation:
Since x is counted in hundreds, x=600/100.
x=6
6x-10
When you substitue,
6*6-10
36-10
26
you get 26.
Answer:
x=9.84375
Step-by-step explanation:
...
Are you familiar with z-scores? According to the definition,
(given numerical value) - (mean)
z = ---------------------------------------------
standard deviation
Thus, with the given numerical value equal to 410 and the std. dev. equal to 75, the corresponding z-score is
410-500 -90
z = --------------------- = --------------- = -1.2
75 75
Use a table of z-scores to determine the area under the standard normal curve to the left of z = -1.2. Your result is the probability that a given family chosen at random spends less than $410 per month.