Answer:
(a)x(a^2+2a-3)+5(a^2+2a-3)
Answer:
190 + __ = 248
190 + 58 = 248
Step-by-step explanation:
Since 248 is 190 MORE THAN the speed you're trying to find, add 190 to the unknown speed (which comes out to 58) to equal 248.
Answer:
70°
Step-by-step explanation:
every triangle has a total of 180°, therefore 180-80-30=70°
i apologize if my answer is incorrect!
Add up the lengths of the several sides of the polygon.
Examples: The perimeter of a triangle is the sum of the lengths of the 3 sides.
The perimeter of a hexagon is the sum of the lengths of the 6 sides.
And so on.
I highly recommend drawing any polygon whose perimeter you wish to calculate.
