The Baldwin family walked 4/5 of a mile in 4/9 of an hour. What is their unit rate in miles per hour? 1. four -ninths over four-fifths = four over nine mile per hour

2. four-fifths over four-ninths = one and four-fifths miles per hour

3. four-ninths over four-fifths = one and four-fifths miles per hour

4. four-fifths over four-ninths = four over nine mile per hour

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

What is the value of x in the equation 1/5x - 2/3y = 30 , when y = 15

Lian is deciding which of two gyms to join. each gym charges a monthly rate plus a one-time membership fee. lian correctly wrote and solved a system of linear equations by substitution to compare the costs of the memberships. in her work, she substituted an expression for one variable and solved for the other. this resulted in the equation 75 = 75. what can lian conclude? one gym charges $75 per month. each gym charges $75 per month both gyms charge the same monthly rate and the same membership fee. both gyms charge the same monthly rate, but not the same membership fee.