[[7+(-3)]=[18times1(-21)times(-4)]+[(-21)times(-6)]],[21y times[(-4)+(-6)]=[(-2)times(1+0?]

Verify: (-21)times[(-4)+(-6)=[(-21)times(-4)]+[(-21)times(-6)]

Verify: (-21)times[(-4)+(-6)=[(-21)times(-4)]+[(-21)times(-6)]

Evaluate: (-3) times (-4) times (-6) times 7 times (-2)

Verify: (-17) times 21=17 times (-21)

9.Simplify: (i) "(4)/(81)times(-3)/(25)times(27)/(64)times(-60)/(21)

The average thermal energy of oxygen at a temperature of 27C (А) 6.2times10^(-21) J (В) 4.5times10^(-21) J (C) 3.5times10^(-21) J (D) 1.2times10^(-21) J

((4)/(9))^(-2)times((1)/(4))^(-2)times(1)/(3^(-2))times((17)/(18))^(0)

Verify the: (-21)xx[(-4)+(-6)]=[(-21)xx(-4)]+[(-21)xx(-6)]

(5)/(7)((5)/(14)times(6)/(21))=

Verify the following:(a) 18xx[7+(-3)]=[18xx7]+[18xx(-3)] (b) (-21)xx[(-4)+(-6)]=[(-21)xx(-4)]+[(-21)xx(-6)]