Find the size of the final unknown interior angle in a polygon whose other interior angles are: Find the size of the final unknown interior angle in a polygon whose other interior angles are:

162°, 110°, 125°, 138°, 105° and 98°

the final interior angle is 162

Step-by-step explanation:

To find the sum of interior angles use the equation (n-2) · 180. Then add all of the interior angle together and subtract it from the sum of interior angles. There you would have your answer.

(n-2)·180= (7-2)·180= 5·180=900  

162+110+125+138+105+98=738

900-738=162

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: