Set it up at 425=.17x
Solve for x by dividing both sides by .17 to get x=2500
Answer is 2500
Answer: 57
=====================================================
Explanation:
Convert each raw score to a z score
If x = 63.4, then
z = (x-mu)/sigma
z = (63.4-72.3)/8.9
z = -1
if x = 81.2, then
z = (x-mu)/sigma
z = (81.2-72.3)/8.9
z = 1
So P(63.4 < x < 81.2) is the same as P(-1 < z < 1)
Through the empirical rule (aka the 68-95-99.7 rule), we know that roughly 68% of the data values are within one standard deviation of the mean. In other words
P(-1 < z < 1) = 0.68 approximately (see note below)
Multiply 0.68 by the total 84 to get
0.68*84 = 57.12
which rounds to 57 people
Note: we can use a calculator to get a more accurate result of 0.68268949; a data table works as well but it won't be as accurate. For the purposes of this problem, the value 0.68 is good enough
Assuming theres a multiple choice list to go with, but it wasnt provided.
if you isolate y to turn it into a y=mx+b equation, which is what this looks like,
4y+10 = 3x, next 4y= 3x - 10, assuming you isolate y again, then you divide the 4 to finish isolationg it leaving you with
y = 3/4x - 2.5
if this is incorrect please respond with answer choices and i will help from there,
hope this helped.
This is a case of counter bore holes. The correct answer is C.
Where:
2 ---- Indicates two holes.
∅1.25 THRU ---- Shows that the holes have a diameter of 1.25 through the material.
Then, there is a counterbore of diameter 2.25 and a depth of 1.00.
10*220 is 2200 because u just add 1 zero to the final answer because 10 only has 1 zero
