Bella is working on the world record for longest beaded necklace. she has 10,000 glass beads that have a diameter of 0.4 cm. if she strings these beads end to end, how long will her necklace be?

Aportion of a line bounded by two points is defined as

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.