Consider the solid that lies below the surface z = xy and above the following rectangle. r = (x, y) | 8 ≤ x ≤ 14, 0 ≤ y ≤ 4 (b) use the midpoint rule with m = 3, n = 2 to estimate the volume of the solid.

answer: 4/6 =5/7.5

step-by-step explanation: it is based on scale and the scale between the two is 1.25. the answer is correct but i dont know if i explained it right

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.

the answer is $42.96

step-by-step explanation:

a

step-by-step explanation: