Problem page debra finished her chemistry assignment in 15 hours. then she completed her history assignment in 34 hours. what was the total amount of time debra spent doing these two assignments?

What percent of the circle below is shaded?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart