Assume the random variable x is normally distributed with mean p= 80 and standard deviation o = 4. Find the indicated probabilit
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-4x + 7 = 11
First, subtract 7 from both sides. / Your problem should look like:
Second, subtract 11 - 7. / Your problem should look like:
Third, divide both sides by -4. / Your problem should look like:
Fourth, change the fraction to a negative. / Your problem should look like:
Fifth, cancel 4 out. / Your problem should look like:
Answer: x = -1
First, subtract 7 from both sides. / Your problem should look like:
Second, subtract 11 - 7. / Your problem should look like:
Third, divide both sides by -4. / Your problem should look like:
Fourth, change the fraction to a negative. / Your problem should look like:
Fifth, cancel 4 out. / Your problem should look like:
Answer: x = -1
For this type of problem,
It is stated that the weight of steel is 32.6 lbs per foot
Meaning, every foot of steel beam weighs 32.6.
So 2 feet of steel beam would weigh 32.6 x 2 = 65.2 lbs
and 3 feet will be 32.6 x 3 = 97.8 lbs
Since we have a limit of 5000 lbs which is the capacity of the truck.
We can have an equation :
Where x is the number of foot
Solve the value of x by dividing both sides by 32.6 :
So the answer is 153.37 feet of steel beam