Step-by-step explanation:
it will 2.5 this is right answer option D
Answer:

Step-by-step explanation:
............................
The common factors for 20 is 1,5
25 is 1,5
40 is 1,5
GCF:5
<span>Best Answer: 1) Q is positive therefore the process is endothermic. .769kj+-.810kj=-.041kj
2) Heat is released meaning it is exothermic. -66.9kj+45=-21.9kj
3) 7.29kj. Endothermic.</span>
Answer:
Angle(APR) = 43
x = 21.5
Step-by-step explanation:
The given angles are complementary :
So APR + RPW = 90
APR = 43
2x = 43
x = 21.5