Answer:
D. Mathematical expressions for the relationships
Step-by-step explanation:
Quantitative analysis also called QA for short is the technique that tries to understand behaviour by using mathematical and statistical modeling, measurement and research. A quantitative analyst aims to represent a given reality in terms of numerical value. This can be achieved by using mathematical formulas and expressions to explain the relationships that exists between the variables. The data analyzed are usually gotten from polls and questionnaires or in general, well structured research instruments.
This is a basic algebraic word problem. Make x equal the miles you traveled. multiply that by 2 and add the 3 initial dollars, then add the one dollar tip, finally make all this equal to 20. So your equation should look like this:
2x + 3 + 1 = 20
add the 3 and 1:
2x + 4 =20
move the 4 to the right side:
2x = 16
devide both sides by 2:
x = 8
So you traveled 8 miles.
Answer: 0.0478
Step-by-step explanation:
Given : The life of a particular brand of laptop battery is normally distributed with a mean of 8 hours and a standard deviation of 0.6 hours.
i.e. 
Let x be the random variable that represents the life of a particular brand of laptop battery.
Then , the probability that the battery will last more than 9 hours before running out of power will be :-
[∵ 
]
[∵ P(Z>z)=1-P(Z≤z)]
[using P-value table for z]
Hence, the probability that the battery will last more than 9 hours before running out of power = 0.0478
Answer:
Step-by-step explanation:
Recall that the perimeter of a shape is found by adding each of the sides together.
If the lengths of the sides are 
, then the perimeter would be 
Answer:
D: 76!
Step-by-step explanation: On Edgenuity.
