A book store is hosting a party. The tickets to the event must be ordered ahead of Time and are 1.50 for children and 2:50 for adults. So far 45 children tickets have been sold, which is 60% of the total tickets. How many tickets have been sold so far?

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.

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?