Kristina needs to mix a 20% alcohol solution with a 60% alcohol solution to create 200 milliliters of a 34% solution. How many milliliters of each solution must Kristina use?

20% alc: 135 mL

60% alc: 65 mL

Explanation:

Table:

20% alc /  x  /    (.2)(x)        

60% alc /  200-x /   .6(200-x)        

34% alc. / 200 /   (.34)(200)        

Equation for 60% alc:   .6(200-x) = (.34)(200) + (.2)(x)

Equation for 20% alc:   (.2)(x) + .6(200-x) = (.34)(200)

Final:

20% alc: 135 mL

60% alc: 65 mL

Hopes this helps! : [vote brainliest]

idk

step-by-step explanation: i just don't

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.