The equation is 2x+3=7
2x +3=7
-3 -3
2x=4
divide both sides by 2
x=2
the answer is 2
X = 13/2 or 6 1/2. Hope this helps!
One cubic yard is equal to 27 cubic feet because one yard is equal to 3 feet
<em><u>Solution:</u></em>
Given that, there 27 cubic feet in one cubic yard
Yard and feet are units of distance
1 Yard (yd) is equal to 3 feet (ft). To convert yards to feet, multiply the yard value by 3.
<em><u>The conversion factor for 1 yard to 1 feet is given as:</u></em>
Now find for 1 cubic yard . Cubic yard means yard raised to power 3
Therefore,
Thus one cubic yard is equal to 27 cubic feet
Therefore, there are 27 cubic feet in one cubic feet
Answer:
A.) The manager calculated mean and not standard deviation
B.) Standard deviation should be calculated with the use of formula.
Step-by-step explanation:
A.) The assumption that his customers do spend more than the national average is wrong because the standard deviation is not calculated and mean cannot be used as a substitute for standard deviation.
B.) Standard deviation tells us how value obtain from group measurement deviates from the average value or expected value of each item of observations.
When standard deviation is low, this show that the value is very close to the expected value or the average value.
If the national average value = $150 and average customer spends $160.
Deviation = 160 - 150 = 10
This is lower than $30
Or better still, the manager should make use of standard deviation formula. Which is the square root of variance.
