If there is 20 pencils there will be 5 erasers 20:5
1,440 divided by 12 = 120. your answer should be 120 points per round
Answer:
8.33 hours
Step-by-step explanation:
120-45 = 75
75 ÷ 9 = 8.33
If the sister is 20 now, the brother is 10. do you understand?
X²+3x-4=0. a=1; b=3; c=-4. D=b²-4ac=9-4*1*(-4)=25. D=25.