Answer:
f) None of the above.
Step-by-step explanation:
When we try to adjust a curve from a scatter plot to try and predict values of the dependent variable y given known values of the independent variable x.
The curve is a function y=f(x) which usually is a line, a logarithmic, parabola, power or exponential.
In order to choose which curve adjust the best, we compute a number r called correlation coefficient.
The closer r is to -1 or +1, the better the curve adjust the scatter plot.
When r =0, we say there is no correlation between the points x and y
When -1<r<0 we say there is a negative correlation, this means that the values of y decrease as the values of x increase.
When 0<r<1 we say there is a positive correlation, this means that the values of y increase as the values of x increase.
When r =1 or r =-1, we say that there is a perfect correlation. It means that all of the points of the scatter plot lie on the curve.
So, from the possible choices of answer, f) None of the above is the right one.
Answer:
15 boys
Step-by-step explanation:
There are 27 students. The number of girls is only 4/5 of the number of boys. I started by splitting the class. 14 boys and 13 girls doesn't work, so I changed it to 12 and 15. If it was 12 girls and 15 boys, the girls would have 4/5 of the boys, so it must be 12 girls and 15 boys.
Answer:
22
Step-by-step explanation:
Answer:
The absolute value graph below does not flip.
Step-by-step explanation:
New graphs are made when transformed from their parents graphs. The parent graph for an absolute value graph is f(x) = |x|.
The equation used for a new graph transformed from the parent graph is in the form f(x) = a |k(x - d)| + c.
"a" shows vertical stretch (a>1) or vertical compression (0<a<1), and <u>flip across the x-axis if "a" is negative</u>.
"k" shows horizontal stretch (0<k<1) or horizontal compression (k>1), and <u>flip across the y-axis if "k" is negative</u>.
"d" shows horizontal shifts left (positive number) or right (negative number).
"c" shows vertical shifts up (positive) or down (negative).
The function f(x)=2|x-9|+3 has these transformations from the parent graph:
a = 2; Vertical stretch by a factor of 2
k = 1; No change
d = 9; Horizontal shift right 9 units
c = 3; Vertical shift up 3 units
Since neither "a" nor "k" was negative, there were no flips, <u>also known as reflections</u>.
Answer:
The answer is 14.46%
Step-by-step explanation:
Given is : A culture containing 20 bacteria multiplies to 117,360 in one minute.
Let A0 be initial bacteria count = 20
Let A be final bacteria count = 117360
Time = 60 seconds
R = rate
Formula to be used = 
Taking log function (ln) on both sides.
Hence, r = 0.1446 and in percentage it is 14.46%
