Henry can paint a room in 5 hours and nick can do it in 2 hours. How long will it take Henry and nick to paint the room together?

1 3/7hours

Step-by-step explanation:

If Henry can paint a room in 5 hours, then he must be able to paint 1/5 of the room in 1hour

If nick can do it in 2 hours, he must be able to paint 1/2 of the room in 1 hour

Together they can paint (1/5+1/2) of the room in 1 hour

1/5+1/2 = (2+5)/10

= 7/10

This means that they can both paint 7/10 of the room in 1hour

Hence the can use 10/7 hours to paint 1room

Time taken for them to paint the room together is 10/7 hrs = 1 3/7hr

black/brown

step-by-step explanation:

well, you see here, jamal was born to 2 parents, his mother who he lives with and his father who left at a young age and who happens to be younger than him. he stole cookies because he has to steal food due to the fact that he spends his government poverty checks on pot and women.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.