Answer:
x=10
Step-by-step explanation:
Hey There!
Our goal to solve this problem is to get the variable on one side and the constant on the other using inverse operations
step 1 multiply each side by 3
3x5=15
3x/3 cancels out
now we have 2x-5=15
step 2 add 5 to each side
-5+5 cancels out
15+5=20
now we have
20=2x
step 3 divide each side by 2
20/2=10
we're left with x=10
Answer: 0.5
Step-by-step explanation:
Given : Adult male heights have a normal probability distribution .
Population mean :
Standard deviation:
Let x be the random variable that represent the heights of adult male.
z-score :
For x=70, we have
Now, by using the standard normal distribution table, we have
The probability that a randomly selected male is more than 70 inches tall :-
Hence, the probability that a randomly selected male is more than 70 inches tall = 0.5
Answer:
The length between the two points is RT = 1.3 units
Step-by-step explanation:
The coordinates of the point R and T are R(2,1.2) and T(2,2.5).
Now, by DISTANCE FORMULA:
The distance between two coordinates P and Q with coordinate P(a,b) and Q(c,d) is given as:
So, here the distance RT =
or, RT = 1.3 units
Hence, the length between the two points is RT = 1.3 units