Please help me answer these!!! Thanks :)

Mathematics

1 answer:

Andrei [34K]4 years ago

6 0

-2-(+7) is the same thing at -2-7 which is -9

$-3 \frac{2}{7} -(- \frac{5}{7} )$ is the same thing as $(-3 \frac{2}{7}) + (\frac{5}{7})$ which is $- \frac{18}{7}$ or $-2 \frac{4}{7}$

Last but not least the last one is the Associative Property based on definition listed below :)
Associative Property:<span> When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)</span>

You might be interested in

There are 13 brunettes and 7 blondes in a Spanish class. The teacher selects two students to run an errand. How many possible ou

Delicious77 [7]

Answer:

91 possible outcomes

Step-by-step explanation:

As the teacher selects a brunette followed by a blonde, we just need to find the number of possibilities of choosing a brunnette and the number of possibilities of choosing a blonde:

number of possibilities of choosing a brunette: 13

number of possibilities of choosing a blonde: 7

Then, the number of possible outcomes is the product of these number of possibilities:

13 * 7 = 91 possible outcomes

8 0

3 years ago

Sally must have at least $200 in her savings account to avoid a

xxMikexx [17]

Answer:

675$

Step-by-step explanation:

got it right