3 identical circles of radius 21cm are connected at their centres as shown below find the area of the shaded region (50 points)​

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog