The boiling point of water is 212∘F. In degrees Celsius, how much heat do I have to add to boil water that is already 194∘F? Use the formula C = 59(F − 32), where C represents the temperature in degrees Celsius and F represents the temperature in degrees Fahrenheit.

You need to add 10 °C of heat.

Step-by-step explanation:

To find the quantity of heat in Celsius first we need to convert the units:

212 °F to °C (boiling point):

   (1)

194 °F to °C:

   (2)

Now we can find the quantity of heat that must be added by substrating equation (2) from (1):

Therefore, you need to add 10 °C of heat to boil water that is 90 °C.    

I hope it helps you!

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:

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation: