Uma amostra de areia foi retirada de uma jazida e seca em estufa. O volume total desta amostra (sólidos mais vazios) foi de 1543 cm³. O volume de sólidos também foi determinado e o valor encontrado foi de 1170 cm³. Determine a compacidade, a porosidade e o índice de vazios desta amostra.​

Solve the equation x/4 - 5= -8 -27 -12 -7 12

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2