i can't find the answer and my mom doesn't know.

First we do the sum in brackets: -2.4-0.63=-3.03. (-.63 is the same as -0.63 and -2.4 is the same as -2.40.)

Next we multiply this by 1.8 which gives us -5.454, and finally -5.454 times -3.42=18.65268, because the minus signs multiplied together make plus so we don’t need a sign in front of the result. I’m assuming there is no operator between the bracket and 1.8, so multiplication is implied.

- All categories
- Pre-Algebra Answers 12.3k
- Algebra 1 Answers 25.3k
- Algebra 2 Answers 10.5k
- Geometry Answers 5.2k
- Trigonometry Answers 2.6k
- Calculus Answers 6.1k
- Statistics Answers 3k
- Word Problem Answers 10.2k
- Other Math Topics 6.7k

81,954 questions

86,350 answers

2,238 comments

71,713 users