Mary has had five unit tests in math so far this semester.
she has achieved scores of 86, 82, 93, 88, and 89 out of 100.
she knows there are only two unit tests left, and would like to achieve an overall average of 90 on the seven tests.
a) can she achieve her desired average? if so, what average would she need to achieve on the last two tests?
b) what is the minimum score she could get on either of the last two tests, and still achieve an overall average of 90?

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.

you a real one for tat answer

step-by-step explanation: