Answer:
And replacing we got:
Step-by-step explanation:
We can define the random variable X as the thickness of a protective coating applied to a conductor designed to work in corrosive conditions. And the distribution for X is given by:
And we want to find this probability:
And in order to find this probability we can use the cumulative distribution function given by:
And if we use this formula for the probability desired we have:
And replacing we got:
We know that a 20%=£15
x=the normal price of a coat =100%
20% / £15=100% / x
x=(100%*£15) / 20%=£75
Answer: the normal price of this coat would be £75.
Answer:
Give me brainliest
Step-by-step explanation:
<span>The given condition is:
If 5x + 7 = 2x =1, then 3x + 7 = -1
=> This given equation represent a
subtraction property of equality.
=> 5x +7 =2x-1
=> 5x – 2x + 7 = -1
=> 3x + 7 = -1
What we did was we subtracted 2x from 5x
to get the 3x
Subtraction property of equality is a mathematical process in where we subtract
numbers from both sides that contains the same expression.
Like 5x and 2x, since they have the same equation, we both subtracted both
numbers and the rest remains as it is.
</span>
