68. A solvent manufacturing company is producing toluene, and stocking it in two different vars with
10,000 gallons of capacity each. Vat A currently con-
cains 450 gallons of toluene, and its contents are
increasing at a rate of 40 gallons per minute. Vat B
currently contains 1,250 gallons of toluene, and its
contents are increasing at a rate of 15 gallons per min-
ute. In how many minutes will the two vats contain
equal amounts of toluene?

x=9

step-by-step explanation:

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.

5

step-by-step explanation: