Amixture of 5% disinfectant solution is to be made from 8% and 4% disinfectant solution. how much of each solution should be used if 36 gallons of 5% solution is needed ?

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?