I think it’s 6.72 cm !! let me know if it’s wrong
Answer:
B
Step-by-step explanation:
40-2n
when n=2
simply replace n with 2
therefore we have
=40-2(2)
=40-4
answer=36
Answer:
The shape includes a curve.
Step-by-step explanation:
A polygon consists of joined straight lines - no curves.
Answer:
Squared differences between actual and predicted y
Step-by-step explanation:
The least squares regression method used in predictive modeling for linear regression models produces a best fit line which will minimize the square of the mean difference between the actual and projected or predicted values of the dependent, y variable. Hence, the when the sum of the squared value of the difference between the actual and predicted values (residual) are taken, the fit which gives the minimum sum of squared value is the best fit line upon which the estimated regression equation is based.
Answer:
Step-by-step explanation:
So we have the equation:
First, note that this is the same as:
Factor out a 3:
Divide both sides by 3:
Change the negative exponent into a fraction:
Multiply both sides by 3^x:
Distribute:
Let u equal 3^x. So:
Subtract 30u from both sides:
This is a quadratic. Solve using the quadratic formula. A is 1, b is -30, and c is 1. So:
Substitute:
Simplify:
Subtract:
Simplify:
Simplify:
Substitute back u:
Take the log to base 3 of both sides:
The left side cancels:
So, our solutions are:
And we're done!