Cho tam giác ABC có AC= 5cm, BC=7cm a Gọi H là hình chiếu của A lên BC và HC=4cm. Tính AH
b Gọi k là hình chiếu của H lên AC. Tính chu vi của tứ giác ABHK

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1