Answer:
4
Step-by-step explanation:
Significant figures are whole numbers, without any decimals, the four numbers are therefore significant.
3x times 2x+3xy-2y times 2x-2y times y
6xsquared+3xy-4xy-2ysquared
6xsquared-xy-2ysquared
Median=middle
put the numbers in numerical order from least to greatest and play tennis
and if you have 2 numbers is the middle find the mean/average of the two
81
PQ = RQ and <PQR = 60°
Triangle PRQ is equivalent triangle so <QPR = <QRP = <PQR = 60°
PS = RS, and <PSR = 90°, triangle PSR is a <span>right isosceles triangle
</span>So
a = <SRP = 45°
and
b = <QRP - <SRP
b = 60° - 45°
b = 15°
answer
a = 45°
b = 15°
