mimibeet79 mimibeet79
  • 26-04-2021
  • Mathematics
contestada

The mean of 19 students is 126cm.
Another student joins the group and the mean becomes 128cm.
What is the height of the new student?

Respuesta :

rxlew rxlew
  • 26-04-2021

Answer: 166 cm

Step-by-step explanation:

x / 19 = 126

* 19 * 19

x = 2394

(2394 + y) / 20 = 128

* 20 * 20

2394 + y = 2560

- 2394 - 2394

y = 166

Answer Link

Otras preguntas

How many neutrons does element X have if its atomic number is 48 and its mass number is 167? How many neutrons?
The united states congress, which is made up of two houses is a
How would you refer to a married couple? A.abuelos B.nietos C.esposos D.padres E. hijos
Discribe one way to separate sand and soil from water
Why might the Great Khan have wanted to make the roads pleasant?
can someone please help me with this question and a couple more?
list 3 things you can do to help prevent cauti
Which was the most important reason as to why slavery was justified?
Rock music accounted for 30.5% of the total sales of recorded music in 1999 , and 20.4% of the total sales of recorded music in 2009 . Find the average rate o
Is this a Simile? sweeps across the country/ like a traveling circus