Skip to content

Physics Playground

Simulations How we teach Pricing

Language

Log in Start learning free

Loading…

Physics Playground

Built on open, peer-reviewed sources: OpenStax, The Feynman Lectures on Physics, HyperPhysics, NASA and NIST. See our sources.

Learn

Physics course
Math for Physics
Start with the math toolkit
Simulations
Glossary
Exercises
Past exams
Library
How we teach

Company

Pricing
Terms
Privacy
Contact

© 2026 Physics Playground. Made for the curious.Language

Exercises Expressions, exponents and radicals

Example 7.58 from Prealgebra, 7.5 Systems of Measurement

Systems of Measurement: example 7.58

The weather forecast for Paris predicts a high of $20 °C.$ Convert the temperature into degrees Fahrenheit.

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
We will substitute $20 °C$ into the formula to find $F .$

Use the formula for converting °F to °C $F = \frac{9}{5} C + 32$

Multiply. $F = 36 + 32$

Add. $F = 68$

So 20°C is equivalent to 68°F.

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Convert the Celsius temperatures to degrees Fahrenheit:

The temperature in Helsinki, Finland was $15 °C .$

How did it go?

PreviousSystems of Measurement: example 7.57 Next Writing Integers as Rational Numbers

From Prealgebra (1st edition) by OpenStax (Rice University), section 7.5, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.