Given:
A number 72.
To Find:
12% of 72.
Solution:
The given problem can be solved using the concepts of percentages and their applications.
1. The given number is 72.
2. x% of a number n is given by the formula,
=> x% of n = ,
3. x% of a number can also be defined as x parts of 100 multiplied by the given number.
4. 12% of 72 can be calculated using the above number,
=> 12% of 72 =
=> 0.12 x 72,
=> 864/100,
=> 8.64.
Therefore, 12% of 72 is 8.64
The slope intercept form equation is this
y = mx + b
m being the slope and b being the y intercept
So, an equation of a line with a slope of 3/4 and a y-intercept of -2 would look like this
y = 3/4x - 2
I hope this helps.
YOU'RE WELCOME :D
Answer:
The probability that a call last between 4.2 and 4.9 minutes is 0.4599
Step-by-step explanation:
Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula
We will use 
, the cummulative distribution function of W. The values of are well known and the can be found in the attached file
We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599
3
The 3 is the gradient in front of the x
Mark brainliest please
36 and 48
a = b+12
a+b = 84
(b+12) + b =84
2b +12 = 84
2b = 72
b= 36
a = b + 12
a = 36 + 12
a = 48
