We are given:
(7a−7)−(12a−4)

Distributive the negative: =7a−7−12a−4

Combine like terms: =-5a-3

Distributive the negative: =7a−7−12a−4

Combine like terms: =-5a-3

Question

asked 2021-06-15

\(\displaystyle{\left({7}{w}^{{2}}+{6}{w}{z}+{4}{z}^{{2}}\right)}−{\left({w}^{{2}}−{3}{w}{z}+{2}{z}^{{2}}\right)}\)

asked 2021-09-06

Your manager will assign her 9 employees to three tasks, 2 to task A, 4 to task B, and 3 to task C. If she randomly assigns employees to tasks, what is the probability that you and your best friend will be the two assigned to task A?

asked 2021-09-09

In a fuel economy study, each of 3 race cars is tested using 5 different brands of gasoline at 7 test sites located in different regions of the country. If 2 drivers are used in the study, and test runs are made once under each distinct set of conditions, how many test runs are needed?

asked 2021-09-05

55 athletes are running race. A gold medal is to be given to the winer, a silver medal is to be given to the second-place finisher, and bronze medal is to be given to the third-place finisher. Asume that there are no ties. In how many possible ways can the 3 medals be distributed