For every 3 laps that jackie swims. ronnie swims 2 laps during practice they swam a combined total of 70 laps how many laps did ronnie swim durring practice 42 36 28 24

Remark

If you are given the total number of laps they swam, then you must compare Ron to the total of the two parts of their ratios.

Solution

The total part of their ratios is 2 + 3  =  5

The proportion looks like this

2 (Ron) / 5 (Total) = x / 70

2/5 =x / 70                         Multiply both sides of the proportion by 70

(2/5) * 70 = x

140 / 5 = x

28 = x

Answer

Ron swam 28 laps

C

the answer is 9 because the question is telling how much it be together.

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?