Answers:
Question 19: 177 bpm
Question 20: 95˚F
Explanations:
Question 19:
You had the formula set up properly like this:
[tex]R = \frac{885 \sqrt{25} }{25} = \frac{885(5)}{25} = \frac{4425}{25} [/tex]
This is where you went wrong - I don't know exactly what you did, but your division of 4425 ÷ 25 is wrong. You should have ended up with 177 which is the correct answer.
Question 20:
You had the formula set up correctly again, and merely used the wrong sign when adding 32.
[tex]F = \frac{9(35)}{5} + 32 = \frac{315}{5} + 32[/tex]
This is where you went wrong. You subtracted 32 from 63 when you should have added it. (See red circle on your subtraction.)
63 + 32 = 95˚F
