Dallen002 Dallen002

03-01-2017
Mathematics

contestada

Jose's math grade is the mean of his three exams. His grades of the first two exams were 82 and 93. What grade must he earn on his third exam to have of at least 90 for the class?

Respuesta :

AmplifiedHuman AmplifiedHuman

03-01-2017

So we let the mark of his third exam be x
(82+93+x)/3=90
Multiply both sides by 3
82+93+x=270
x=93

Answer Link

Аноним Аноним

03-01-2017

98
because ..
82+93+98=273
273/3=91

Answer Link

Otras preguntas

Help??? What is 3x+5x=67y?

What are some reasons why Immigrats people come to the U.S.?

Which of the following is equivalent to 3a + 4b – (–6a – 3b) ? A. 16ab B. –3a + b C. –3a + 7b D. 9a + b E. 9a + 7b

What is the purpose of sensory adaptation

Which of the following categories includes the most distantly related organisms? (A) family (B) species (C) class (D) genus (E) order

What are some reasons why Immigrats people come to the U.S.?

which expression is equivalent to x^4-y^4?

Identify the turning point of the function f(x)=x^2-2x+8 by writing its equation in vertex form. Show work

Which substance will combine with oxygen gas to produce a greenhouse gas? a. Na b. S c. H₂ d. Ne e. C

do you know how to say my in Spanish?