Round 639 to the nearest ten

Jack has 9 coins in his pocket he only has pennies and dimes he has 3 fewer dimes than pennies. how much money does jack have?

Ray LC is an angle bisector of JLY, JLC = (6x+1), and JLY = (10x+16). What is JLC?

Which expression is equal to (x-3) (x-2) / (x+3) (x-3) ? x-3/x+3 x+2/x+3 x-2/x-3 x-2/x+3

What quadrilateral have all the attributes of rhombus

An observer in a lighthouse 350 ft above sea level observes two ships directly offshore. The angle to the shore are 4 and 6.5 degrees.

Nico and Tony have decided to pay for their own phone plans. Nico had to pay $100 to sign up for Verizon and is going to be charge an additional $30 each month.

How do the symptoms of depression compare to those of attempted suicide?

A certain forest covers an area of 3100 km^2. suppose that each year this area decreases by 8.25%. what will the area be after 15 years? round to the nearest square kilometer.

Krista has a quiz today. There are 4 questions with 4 options. Each question only has one correct answer. She wants to guess and get 3 out of the 4 questions right. What is the probability of her getting 3 right

A positive number is 7 less than another positive number. 4 times the greater numver added to 1/3 of the lesser positive number is 80. Find the two positive numbers