Answer:
x = 12
Step-by-step explanation:
Step 1: Write quadratic
x² - 24x + 144 = 0
Step 2: Factor
(x - 12)(x - 12) = 0
Step 3: Find roots
x - 12 = 0
x = 12
Lowest score earned to be qualified for an interview is 92.82
X : Marks scored in interview
X ~ N(80,100)
Here we need to find x such that P(X > x) = 0.10
using standard normal table,
we get P( z > 1.282) = 0.10
It's always easy to use Standard normal distribution to solve questions of normal distribution because standard normal is special case of normal distribution with mean 0 and standard deviation 1.
To convert x (which follows Normal distribution) to standard normal use: 
so, 
<em>hence,</em>
<em> </em>
Hence Lowest score earned to be qualified for an interview is 92.82
To learn more about Normal Distribution visit:
brainly.com/question/4079902
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Answer:
110 fence posts
Step-by-step explanation:
102÷6=17
multiply by 2 = 34
330÷6=55
multiply by 2=110
add together= 144 fence posts
Answer:
63.20
Step-by-step explanation:
Because you do 8% of 789.99 which equals 63.20
Since PQ=PR
=> Q is the midpoint of PR
Hope this helps you