deplorablesrus deplorablesrus

20-02-2017
Mathematics

contestada

If I had 30 students in a class and the average age was 20.9 and I added twins and the average age changes to 21.6 years old, how old are the twins?

Respuesta :

chatterbox1a1a chatterbox1a1a

20-02-2017

20.9 times 20 plus 29 times 2 equals 476. Divide that by 22 and it equals about 21.6. Thus the twins are 29 years old

Answer Link

Otras preguntas

Clinical experience involves the experience of the individual clinician, but also the experience of his or her ___________.

Where does the waste material in the body come from and why does the body need to get rid of these waste materials?

El restaurante El Pimiento Rojo abre el próximo sábado. cierto falso

For which of the following compound inequalities is there no solution? Select one: a. 8m+5>=5 and -4m+6<=-10 b. 6m<=-36 and m+24>20 c. -2m< 6 an

Question 11 Saved Farmers in areas where there are no major rivers still require water for their crops. Where do these farmers most likely obtain the water nee

How can i use gland and hormone in a same sentence.?

the table shows the linear relationship in a tank and time. what is the rate of the change of water level feet per hour? also explain how

solving this for x kx+c=2

When the framers were designing the american presidency, they were primarily concerned with achieving a balance between?

A student's research question is: How does sugar intake affect children's school performance? Which of the following is the BEST thesis statement for this stu