Adam can clean a room in 3 hours. If his sister Maria helps, they can clean it in 225 hours. How long will it take Maria to do the job alone?
2 2 = 12 Together time, 2 2 , needs to be converted to fraction 555
Adan:3,Maria:x,Total: 5 Clearlystatetimesforeachandtotal,usingxforMaria 12
1+1= 5 Usingreciprocals,addtheindividualtimesgivestotal 3 x 12
1
1(12x) + 1(12x) = 5(12x) 3 x 12
4x+12=5x −4x −4x 12=x It takes Maria 12 hours
Multiply each term by LCD of 12x
Reduce each fraction
Move variables to one side, subtracting 4x Our solution for x
Answer is - 12 hours
That's correct
Gamma rays are the strongest rays we have because it has a high frequency. Radio waves are not dangerous like gamma because radio waves have low frequency and the waves are long.
Answer:
A clone has ....The same exact..... of chromosomes as its parents.
Graying of America, because the meaning of it is correct for the statement. manifest destiny is about war with Mexico, coal and some sort of expansion. American melting pot is about intercultural marriage. American dream is America dream. Therefore graying of America is correct answer. You can also search this up
