The perimeter of a certain pentagon is 10.5 centimeters. Four sides of this pentagon have the same length, in centimeters, h, and the other side has a length of 1.7 centimeters, as shown below. Write an equation and solve for h.

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!