What is −1 1/3−1 2/3 ?? Thank you for the help :)

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?