Me understand how to do these problems. many in advance

The answer of the first problem is 107.3125 feet squared.

Problem 2: The answer is 4.5 miles an hour

Step-by-step explanation:

The first question is simple. Area = base times height. Multiply the length and the width and it simply gives you the area which should be to the second power+the unit of measure.

The second is quick, but a bit more complex. You must covert all the fractions to an un-simplified fraction. Then you must divide the miles by the hours in fraction form, to get the answer of 4.5 mph

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

i dont know

step-by-step explanation: