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

Houseflies have very tiny hind wings that are too small to lift them off the ground. Scientists have observed fossils of an ancient insect they believe is relat

Alicia deposited $400 in the bank. The bank paid her simple interest at the rate of 5 percent she have in her account at the end of 6 months? O $10 O $20 O $410

Can someone solve this pls?

4. The graph to the right shows Parker's distance from home over time. Based on the graph, describe Parker's distance from home in each of the intervals: betwee

which advantages would the nurse associate with starting enteral feedings instead of parenteral feedings through a nasogastric tube for a patient on the intensi

The following number line are miing ome number. Ue the information provided to complete the number line

What is the measure of angle h?

how is the atmospheric pressure corrected for the presence of level difference of liquid in the tube different from that in the beaker

1 2 3 4 5 6 7. 8 10 For maximum benefit of a therapeutic backrub, the long, upward strokes should be repeated for one to two seconds. O one to two minutes. O

The man at the cash register has a nose the shape of a turnip, and eyes sunk so deep I can't image how he sees well enough to go about his business. "Need somet