matthewyork2063 matthewyork2063

03-08-2018
Mathematics

contestada

If the average of 12 numbers is 14 and the average of 4 of those numbers is 18, what is the average of the other eight numbers?

Respuesta :

ciara180 ciara180

03-08-2018

(8 + X + Y)/3 = 12

multiply both sides of the equation by 3 to get 8 + X + Y = 36

subtract 8 from both sides of the equation to get X + Y = 28

So, the sum of the 2 missing numbers is 28

Answer Link

Otras preguntas

What does the speaker in this poem say will happen to "thy thoughts, when thou art gone"?

Beth needs to add a 10% tip to her $12 meal. How much money does she need to add?

Disruptive selection events select for _______. a. common traits b. genetic uniformity c. camouflage traits d. extreme traits

70% of what number is 50

round 141.999 to the nearest tenth

28/12 simplified (In simplest form.)

50% of cakes were party cakes 1/5 were fruit cakes and the remainder were sponge cakes. What percentage of cakes were sponge

Hours: 5, 10, 12, 15 Miles: 60, 120, 144, 180 Determin the constant rate of change for the table.

After 30 baseball games, A Rod had 25 hits . If after 100 games he had 80 hits, what is the average hits per baseball game.

a seamstress has a piece of cloth that is 3 yards long. she cuts it into shorter lengths of 16inches each. how many shorter pieces can she cut