Answer:
80=h
Step-by-step explanation:
Multiply all terms by the same value to eliminate fraction denominators
4x60=4x3h/4
Then you get :
240=3h
Divide both sides of the equation by the same term
240/3 and 3/3 that means the 3 cancels out
Simply the fraction and your answer is 80
Okay so you would do 30^20 and get the answer
do 2^10 get the answer
multiply those together
keep 3
do 2^2
find the answer to 2^2
multiply 2^2 by 3
divide the first number and bottom number and get your answer
Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The length of the treads is 
The length of the risers is 
Generally the slope of the staircase is
=> 
=>
I typed right on the problem set.
Answer:
Step-by-step explanation:
standard deviation σ =5000
Mean μ = 36500
X = 30000
Probability that tire fails to reach 30000 miles
P(< 30000) = P( z < (30000-36500) / 5000 )
= P ( z < - 1.3 )
= .0968 ( from z table )
refund per mile = .01
refund for 30000 mile = .01 x 30000 = 300
expected cost of promotion
= 300 x .0968
= 29.04
b )
refund of $50 is equivalent to shortage of milage by 50 / .01 = 5000 miles
Probability of miles less than 30000 - 5000 = 25000
P ( X < 25000 ) = P ( z < (25000 - 36500) / 5000 )
P ( z < - 2.3 )
= 0.0107 Answer .
