pls help now plz On your own paper, please write a fraction with x^-5*y^4*z^18 in the numerator and x^-6*y^19*z^-2 in the denominator. Simplify this fraction.

xz^20 / y^15

Step-by-step explanation:

x^-5*y^4*z^18

x^-6*y^19*z^-2

We are dividing so we subtract the exponents

First simplify the x terms

x^ -5 / x^ -6 = x^( -5 - -6) = x^ (-5+6) = x

Then simplify the y terms

y^ 4 / y^ 19 = y^( 4 - 19) = y^ (-15)

Finally simplify the z terms

z^ 18 / z^ -2 = z^( 18 - -2) = z^ (18+2) = z^20

x y ^ -15 z^20

The positive exponent terms are in the numerator and the negative exponent terms are in the denominator ( they change to positive exponents)

xz^20 / y^15

this was already solved by me with a different person. if you look it up in the search bar at the top of the page, you will get the answer.

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.