A decrease in the ratio 4:5 implies that :
New quantity:Old quantity = 4:5
Let the new quantity be 





So, the new quantity is 32
25 - 21 = 4 questions of his history incorrectly ;
4 / 25 = 0.16 represents the fraction of problems he answered incorrectly ;
6.4/52.032=0.123
52.032/6.4=8.13
Answer:
5x2+6x-6=0
Step-by-step explanation:
Standard form is ax2+bx+c=0
We add 6x to both sides and we get:
5x2+6x-6=0
Answer:
Slope: 
Step-by-step explanation:
In order to find the slope from two points, you will need to use this formula m =
in this case, it would be m =
which is 