Answer:
R-squared is a statistical measure of how close the data are to the fitted regression line.
Step-by-step explanation:
It is also known as the coefficient of determination, or the coefficient of multiple determination for multiple regression. ... 100% indicates that the model explains all the variability of the response data around its mean.
Answer: The answer is 9.
Step-by-step explanation:
Since f(n+1) = f(n)
If n= 1
f(2) = f(1)
if n= 2
f(3) = f(2) = 9 {since f(3) is 9}
Since f(2) is now 9 and f(2) = f(1), therefore f(1) will also be 9.
No answer!
Correct Answer: 4.5 cm²Two triangles of different sizes make up the logo. We are to find the difference in the areas of these triangle. Smaller triangle has a base of 2 cm and height 6 cm. Larger triangle has the base of 3 cm and height 7 cm.
Area of the triangle =

x Base x Height
So,
Area of smaller triangle =

cm²
Area of larger triangle =

cm²
The difference in the areas of triangles = 10.5 - 6 = 4.5 cm²<span />
It shows you what to do first (don't quote me o. this only use this if you can't find any other answer)
<span>let x be number of bicycles
and y the number of</span> tricycles<span>
So
x + y = 25 equation 1
The number of wheels is
2x + 3y = 63 equation 2
</span>We can multiply the equation 1 by two and subtract from the second one...
2x + 3y = 63
-(2x + 2y = 50)
then
y = 13 trikes and
x = 12 bikes