7429674879 7429674879

09-05-2021
Mathematics

contestada

Four friends are told that the average (mean) of their grades for their favorite class is 83.75%.

Kevin got 94%, Elizabeth got 78%, and Katherine got 83%.

Tyler's grade was not revealed. What's Tylers grade?

Respuesta :

altavistard altavistard

09-05-2021

Answer:

Tyler got 80%.

Step-by-step explanation:

Represent Tyler's average by t.

Then .94 + .78 + .83 + t

-------------------------- = 83.75%

4

Multiplying both sides by 4, we get 2.55 + t = 3.35

so that t = 3.35 - 2.55 = 0.80

Tyler got 80%.

Answer Link

Otras preguntas

Which of the following is a reason franchising has become popular in recent years? A) Franchise owners are free to set their own rules and operating standards,

Which of the following statements is true?. A) Chemical reaction rates vary with the conditions of the change, but nuclear decay rates do not. B) Nuclear de

Which is true about supporting details? (A) Questionable details provide the strongest support for an author’s main idea. (B) Irrelevant details are unrelated t

The United States wanted overseas territories because the territories had A) access to ports. B) customers who would buy U.S. products. C) connections with Eur

Which statement about Hispanic immigration to the U.S. during the 1990s is true? A) Most Hispanic immigrants don't remain in the U.S. because they can't speak

Which of the following was an object of critique in the works of the "Lost Generation" of writers? A) progressivism B) racism C) materialism D) multi-culturalis

Which process do heterotrophic organisms use to release energy? A) Fermentation B) Natural selection C) Photosynthesis

Which of the following is an endothermic reaction?. . A) an explosion. B) condensation of steam. C) freezing water. D) thawing ice.

Fiona is drawing polygons on a computer. She wants to map a regular 9-sided polygon back onto itself using a reflection. Which set of lines can Fiona choose fro

why is good judgement important to making budgeting decisions