Calculate.
(2x105)(4.3x109)
Write your answer in scientific notation.

Select all of the following expressions that are equal to 2.5.

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.