PLS HELP ASAP, I can only wait for 10 mins, I GIVE 20 POINTS if v1 = (-2,5) and v2 = (4,-3), then the angle between the two vectors is degree. round answer to two decimal place.***

Draw a scaled copy of the circle using a scale factor of 2

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30