Sqrt(17), if I'm reading that right. A is a repeating decimal, so it can be simplified into a fraction, sqrt 49 = 7, and 1/6 is in itself a fraction!
D :D
Answer:
503.7 is the best estimate when rounding each number to the nearest tenth.
Step-by-step explanation:
Round 552.17 and 48.35 to the nearest tenth. That gives us 552.1 and 48.4 (because 5 makes the number round up). Subtract that, and it gives us 503.7.
Answer:
The United States of America mostly and maybe Canada
Answer:
Part a) Is a positive correlation
Part b) ![\$69.5](https://tex.z-dn.net/?f=%5C%2469.5)
Part c) see the explanation
Step-by-step explanation:
Let
x ----> the number of items sold
y ----> the money spent on advertising
Part a) How would you characterize the relationship between money spent on advertising and items sold?
we know that
Positive correlation is a relationship between two variables in which both variables move in the same direction
so
As the value of x increases, the value of y increases
therefore
Is a positive correlation
Part b) Sally uses the function y = 1.6x + 21.5 to model the situation. What score does the model predict should be spent in advertising to sell 30 items?
we have
![y=1.6x+21.5](https://tex.z-dn.net/?f=y%3D1.6x%2B21.5)
For x=30 items
substitute the value of x in the linear equation and solve for y
![y=1.6(30)+21.5=\$69.5](https://tex.z-dn.net/?f=y%3D1.6%2830%29%2B21.5%3D%5C%2469.5)
Part c) What does the number 21.5 in Part (b) mean in the context of the situation?
we have
![y=1.6x+21.5](https://tex.z-dn.net/?f=y%3D1.6x%2B21.5)
This is a linear equation in slope intercept form
where
The slope is
![m=\$1.6\ per\ item\ sold](https://tex.z-dn.net/?f=m%3D%5C%241.6%5C%20per%5C%20item%5C%20sold)
The y-intercept or initial value is
![b=\$21.5](https://tex.z-dn.net/?f=b%3D%5C%2421.5)
therefore
In the context of the situation the number 21.5 means the initial amount spent at the begin (when the number of items sold was zero)
Answer:
Step-by-step explanation:
Given that g is a function from g : {1, 2, 3} ->{1, 2, 4, 8}
by the function
![g(x) = 2^x](https://tex.z-dn.net/?f=g%28x%29%20%3D%202%5Ex)
i.e. we have ![g(1) =2\\g(2) = 4\\g(3) =8](https://tex.z-dn.net/?f=g%281%29%20%3D2%5C%5Cg%282%29%20%3D%204%5C%5Cg%283%29%20%3D8)
Range = {2,4,8} Since there is an extra element 1 in the co domain which is not in range , g is not on to
But g is one to one as 1,2,3 have different images.