Mrs. Storz has decide to give a surprise test on multiplying fractions to her class. One of the problems stated that there were 4 3/7 pizza pies left over in the fridge. In the middle of the night, Mrs. Storz was really hungry and since she loved pizza, she at 2/3 of the pizza left in the fridge. How much pizza did Mrs. Storz eat?

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.

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.