Answer:
Taking data:
28 78 74 89 72
50 55 66 26 84
59 64 88 23 27
70 63 42 37 29
The answer is 
Step-by-step explanation:
As the data is not given in the question i'm guessing the data from the question i solved before
28 78 74 89 72
50 55 66 26 84
59 64 88 23 27
70 63 42 37 29
as taking the above data,
As we know for finding the width of class:
≈ 
Note : By using the above given formula you can calculate the width of any data just by taking the maximum and minimum values of data and the number of classes the data is divided into.
Answer:
3(2x + 3y)
Step-by-step explanation:
Here, we want to divide
The inner term of the first part can be splitted by the use of the difference of two squares
That is;
given two perfect squares, separated by negative; we can write the factors as;
a^2-b^2 = (a-b)(a + b)
Thus;
4x^2 - 9y^2 = (2x-3y)(2x + 3y)
matching term for term;
6x/2x will give 3
while (2x-3y)(2x + 3y)/(2x-3y) = 2x + 3y
So we have the results of the division as;
3(2x + 3y)
Answer:
Circle 2 is a dilation of circle 1 with a scale factor of 3.
Step-by-step explanation:
Just Because.... :D
To solve this problem, we just need to change the described expression into a numerical one.
Our answer is 7(y-1).
This is because the difference of y and 1 refers to the operation of subtraction, and this shows us that we need to subtract 1 from the value that is represented by y. The fact that it says 7 times the difference of y and 1 shows us that we must multiply the quantity y-1 and 7 (meaning we must perform the subtraction between y and 1 before the multiplication with 7). This is what indicates to us that we need parentheses, which allow us to perform this operation first, outlined by the rules of PEMDAS referring to the order of operations.
Hope this helps!
