Simplify: (4 – 5) – (13 – 18 + 2). (Am I right or wrong) (a) -1,

(b) –2,

(c) 1,

(d) 2.

This is my work below!!!

(4 – 5) – (13 – 18 + 2).

= -1-(13+2-18).

= -1-(15-18).

= -1-(-3).

= -1+3.

= 2.

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.