123456 x 23415

answer this ​

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air