Real numbers : Do the following sums in your copy:
1. a) Write 6789 correct to nearest 100
b) Write 6789 correct to 3 significant figures
2. a) Write down the value of 170.
b) Explain why √17 is irrational.

Factor the polynomial 8y^2 - 72 btw "^" means exponent

Is trapezoid abdc the result of a dilation of trapezoid mnpq by a scale factor of ? why or why not? yes, because ab and cd are each the lengths mn and qp. yes, because sides ab and cd are parallel to sides mn and qp. no, because ab is the length mn but cd is the length qp. no, because sides ab and cd have different slopes from sides mn and qp.

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.