Perform the indicated operation and simplify the result.

7/ (3a-1)

Step-by-step explanation:

3a^2 -13a +4        28+7a

*

9a^2 -6a+1         a^2 -16

Factor

(3a-1)(a-4)           7(4+a)

*

(3a-1) (3a-1)        (a-4)(a+4)

Cancel like terms

1                    7

*

(3a-1)                  1

Leaving

7/ (3a-1)

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)