John, rick, and molli can paint a room working together in 6 hours. alone, john can paint the room in 12 hours. if rick works alone, he can paint the room in 15 hours. write an equation comparing the group rate to the sum of the individual rates. then find how long it will take molli to paint the room if working alone. a. what is the equation? b. what is the lowest common denominator for the equation in part a? c. show all work below in solving equation from part a.

Answer

a.

b. 60hrs

Step-by-step explanation:

Let the time Molli will take to pint the room to be = t

Thus the amount of room that Molli can paint in 1 hour= 1/m

The amount of room John can paint is 1 hour= 1/12

The amount of room Rick can paint in 1 hour = 1/15

The equation for working together at a rate x time per work done will be;

You multiply by 6 in the three terms of the equation because it takes 6 hours for John, Rick and Molli to complete painting.

multiply by 10m in every part of the expression because 10m is the Least Common Multiple(LCM) is this case

Collect like terms and find value of m

Molli will take 60 hours to paint the room if working alone

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3