The baldwin family walked four over five of a mile in four over nine of an hour. what is their unit rate in miles per hour?

a. four-ninths over four-fifths equals four over nine mile per hour
b. four-fifths over four-ninths equals one and four-fifths miles per hour
c. four-ninths over four-fifths equals one and four-fifths miles per hour
d. four-fifths over four-ninths equals four over nine mile per hour

 Option 'B' is correct.

Step-by-step explanation:

Since we have given that

Number of miles the Baldwin family walked is given by

Number of hours the Baldwin family walked is given by

So, we need to find the unit rate in miles per hour.

Hence, Option 'B' is correct.

step-by-step explanation:

the areas of two similar triangles are 18 cm2 and 8 cm2. one of the sides of the first triangle is 4.5 cm. what is the length of the corresponding side of the other triangle?

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation: