90kg of sand had been puted in 3 bags but in 2+3+7=12 parts.
90kg/12=7.5kg
Small bag has 2 parts which is 7.5kg*2=15kg
Medium bag has 3 parts which is 7.5kg*3=22.5kg
Large bag has 7 parts which is 7.5kg*7=52.5kg
2:3:7=15kg:22.5kg:52.5kg
15kg+22.5kg+52.5kg=90kg
Answer:
what are the color of the marbles that are not red?
Step-by-step explanation:
the answer is 21 it really not it just I have to do this for this app that won't give me these for answers
Your answer would be -2.2
12a-(4b+4a)-b
12a-4b-4a-b
=> 8a-5b
