we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y=Kx
where
K is the constant of proportionality or slope of the linear equation
In this problem
x ----> is the number of months
y -----> is the total amount savings
we have the ordered pairs
(4,80) and (7,140)
so
Find the value of K
K=y/x
For (4,80)
K=80/4=20
For (7,140)
K=140/7=20
The value of K is the same for both ordered paits
that means------> is a proportional relationship
therefore
the linear equation is
y=20x
the answer is the option A, C and D
1,005,063 is your answer. your welcome
Answer:
Step-by-step explanation:
Hope this helps u!!
Answer:
The first quartile of the distribution of gas mileage is 19.6925 mpg.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean 
and standard deviation 
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What is the first quartile of the distribution of gas mileage?
The first quartile has a proportion of 0.25. So this is the value of X when Z has a pvalue of 0.25. It happens between Z = -0.67 and Z = -0.68, so i am going to use 
So
The first quartile of the distribution of gas mileage is 19.6925 mpg.
Answer:
I don't get it really, sorry.
Step-by-step explanation:
This question is very difficult to understand because of the wording, is there anything else, such as any multiple choice answers or any more information that I could use to assist in your question. As I read it, it says 1 cm : 100 km. And the distance between those two would be 1160 miles. 1160/100=11.6, and 11.6≈11.6 so yes, I dont know what to say. The question answers the answer. Let me know if you understood something that I didn't understand and we can go from there. Hope I could be of some help, even know I don't know what to say.
