Answer:
A is the cheapest deal.
Step-by-step explanation:
find unit rate; cost / quantity
20.20 / 10 = $2.02 per gallon
26.04 / 12 = $2.17 per gallon
28.24 / 24 = $2.01 per gallon
30.45 / 25 = $2.03 per gallon
Let's solve your inequality step-by-step.
−
2
a
−
5
>
3
Step 1: Add 5 to both sides.
−
2
a
−
5
+
5
>
3
+
5
−
2
a
>
8
Step 2: Divide both sides by -2.
−
2
a
−
2
>
8
−
2
a
<
−
4
Answer:
a
<
−
4
Answer:
40x --14
Step-by-step explanation:
Multiply 9 and 2 to get 18
Use distribute property
Multiply 8 by 5x -15
Subtract 32 from 18 = -14
Using the normal distribution, it is found that the score needed to qualify is of 88.32.
<h3>Normal Probability Distribution</h3>
In a normal distribution with mean
and standard deviation
, the z-score of a measure X is given by:

- It measures how many standard deviations the measure is from the mean.
- After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.
In this problem, the mean and the standard deviation are given, respectively, by
and
.
The top 15% of the applicants are selected, hence the score needed to qualify is the 85th percentile, which is X when Z = 1.04, hence:


X - 80 = 1.04(8)
X = 88.32.
The score needed to qualify is of 88.32.
More can be learned about the normal distribution at brainly.com/question/24663213