2.1Determine THREE other angles each equal to 70° 2.2 Hence, or otherwise, show that DE||BC
2.3 Hence, show that:BC=AE×DB÷AD 2.4Calculate the size of E1​

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

Abcd is a square. what is the measure of angle bac