geena82
geena82
08-12-2015
Mathematics
contestada
Find the value of y 7,8,2,5,y; mean=5
Respuesta :
taskmasters
taskmasters
08-12-2015
Value of y = 3
Mean is the average of all numbers. We must add up all the numbers and divide the sum by the numbers there are.
(7 + 8 + 2 + 5 + y) / 5 = 5
(22 + y) / 5 = 5
Perform Cross multiplication.
22 + y
=
5
5 1
(22 + y) * 1 = 5 * 5
22 + y = 25
Find y. Transfer 22 to the other side and change its sign.
y= 25 - 22
y = 3.
To check. Substitute y with its value.
(7 + 8 + 2 + 5 + y) / 5 = 5
(7 + 8 + 2 + 5 + 3) / 5 = 5
25 / 5 = 5
5 = 5
Answer Link
VER TODAS LAS RESPUESTAS ( 85+ )
Otras preguntas
Which of these has the least impact on the climate of a place? A. altitude of that place B. wind patterns of that place C. topography of that place D. g
Which decimal is equivalent to 76/9?
Solve the equation z ÷ 12 = 9. Then check the solution A. 108 B. 1.33 C. 1.25 D. 0.75
What are some social conditions in a nation that may lead to absolutism?
Why are there more representatives than senators in Oklahoma? A.The state allows more people to run for representative. B.The senate may only have a certain n
Develop and strengthen writing as needed by planning, revising, editing, rewriting, or trying a new approach, focusing on addressing what is most significant fo
The integumentary system is an organ system consisting of the skin, hair, nails, exocrine glands, and sensory nerves. What reinforces and protects the ends of
How did Benedict established the basic form of monastic life in the western Christian church
It seldom............(to rain) in this region og the country. Don't interrupt little Tom. He..............(to recite) the alphabet backwards. He................
Drag each tile to the correct box. Review this vocabulary table, paying close attention to the bolded words in context. Then match those words with their defini
