Open pipe fills a storage pool in 24 hours A second pipe feels the same pool in 12 hours when a third pipe is added and all three are used to fill the pool it takes only six hours Find how long it takes the third pipe to do the same job

i'm not sure i quite understand, could you provide more information?

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.