Answer:
of the number is X, 16 = 1 + (2/10)×X - 8
So that is area of rectangle-1/2areacircle
so
areacircle=pir^2
r=5
1/2pir^2=1/2pi5^2=25pi/2=12.5pi
arearectangle=lw=12*5=60
unshaded=60-12.5pi=20.75 square feet
round
20.8 square feet
Option D
The regression line predicts that at x = 4, y equals 2143
<em><u>Solution:</u></em>
Given that when x equals 4, log(y) will equal 3.331
To find: Find y when x equals 4
Since we have given that,
When x = 4,
We need to find the value of 'y' when x = 4
Since it is logarithmic function with base 10, Raise to power of 10 on both sides,
On rounding to nearest whole number, we get 2143
Thus Option D is correct
Right now, we are given the standard form of the line: ax + by = c
a = 6, b = -3, c = 12
If we use algebra to to change it into its point-slope form, we can easily identify the slope of the equation.
6x - 3y = 12
-3y = 12 - 6x
- 3y = -6x + 12
3y = 6x - 12
3y/3 = (6x - 12)/3
y = 2x - 4
Now the equation is in point-slope form: y = mx + b where m is the slope.
Since m=2, the slope of the line is 2.
A shortcut to find the slope of a line in standard form is m = -a/b
Using the same equation as above, 6x - 3y = 12 a = 6, b = -3
-6/(-3) = 2
