Which operation should be performed first for calculations involving more than one arithmetic operation? a. parentheses b. exponents c. multiplication d. division

A. Parentheses.

Step-by-step explanation:

We are asked to find the operation that should be performed first for calculations involving more than one arithmetic operation.

We use order of operations (PEMDAS) to solve a problem involving more than one arithmetic operation.

P = Parenthesis,

E = Exponent,

M/D = Multiplication or Division (Left to right)

A/S = Addition or subtraction (Left to right)

Therefore, we should remove parenthesis first in calculations involving more than one arithmetic operation.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer