The phrase "an effective formula" is correct and usable in written English.
It can be used when discussing a method or approach that successfully achieves a desired outcome or result.
Example: "The researchers developed an effective formula for improving student engagement in online learning environments."
Alternatives: "a successful method" or "a powerful approach".
It's an effective formula and her plots are so strong that the occasional cliché doesn't jar too much.
Inexpensive brands backed by large companies, like Neutrogena, L'Oréal, Revlon, Olay, Dove, Pond's and Aveeno, often have the resources to perform scientific studies to identify an effective formula and prove that it works, Dr. Baumann said.
Still, Mao found the X Corps too tempting a target to resist, and the Chinese believed they had found an effective formula for fighting the UNC: stealth, nighttime attacks, ambushes, local surprise, and superiority in numbers.
Having found an effective formula, Mr. Sanga is now determined to expand the system, buoyed by Eco-Fuel Africa's selection as a finalist in the 2012 Buckminster Fuller Challenge, which celebrates projects that address "humanity's most pressing problems".
Watering down an effective formula may alienate or disappoint loyal or enthusiast shoppers: the loss of exclusivity or cachet.
This has proven to be an effective formula for Rocket in Europe — notable exits have includes sales to Ebay and Groupon that have in turn served as the basis for those companies' expansions into Europe.
This year, a small publishing house in Philadelphia hit on a more effective formula: Take some Jane Austen, add a healthy dollop of gore and start counting the money.
In truth, by 1874 Disraeli himself had already shifted to wooing working class votes via Tory Imperialism, a more effective formula than drains, and one which remains potent to this day.
Lenovo, for example, has developed a highly effective formula for selling to Chinese consumers that it has since taken to India and America.Yet the rise of the new champions has brought a vigorous response from some of the old ones.
A Danish-Argentine Western is an unlikely but effective formula in "Jauja" (March 20).
Thus we were thrown back on the real staple of television: telling and showing a good story... ...... It's an old man's cantankerous reflection on how More has meant Worse, and money has made an expensive mess of a simple but effective formula.
