What's the numerical expression answer to 3+-5•-10-9

Is x plus y equals 3, then 3 equals x plus y. what is the property

An investment is currently worth 2.125x10^4 dollars. Ten years ago, the investment was worth 1.25x10^3 dollars. How many times greater is the value of the same investment today's then the value of the investment 10 years ago

Tom has been a customer of the same bank foe two years and his income can change frommonth to month after paying bills. Tom places 250.00 a month in a two year CD. He notices that last year twice he withdrew 250.

The system of equation shown below is graft on a coordinate grid 3y+x=6 2y-x=9

Tom sells cellphones for $45 a phone. Sam sells tablets for $149 a tablet but he is not making any profit yet because he still needs to pay off his order of $4992. when will the two guys make the same money? How much money will they both have?

Which expression is equivalent to the expression (1 (1/2) Square three

If 16 ounces of nectar feeds 80 hummingbirds how many birds does 12 ounces feed

Will has 24 t-shirts; 1/4 are yellow and 1/3 are white. How many t-shirts are not white neither yellow

Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. The riddle is for you to explain how.

Tommy and his dad rode their bikes at a speed of 12 m. h. p. For 2 hours. They rested in a park and rode at 8 m. p. h. For 2 more hours. How many miles did they travel in total?