graftonbbrackett graftonbbrackett

17-06-2021
Mathematics

contestada

The average age of the 12 people in a classroom is 10. After Ms. Xu walks into the room,
the average age of everyone in the classroom increases to 12. How old is Ms. Xu?

Respuesta :

marcustrinh11 marcustrinh11

17-06-2021

Answer:

24

Step-by-step explanation:

First: 12*10=120

Then: 12*12=144

=> Ms. Xu's old: 144-120=24

Answer Link

Otras preguntas

what the break in the lithosphere called

where do people and animals get energy to move arond

A charge of 0.2 C experiences an electric force of 5 N. What is the strength of the electric field in N/C?

Find r if 2700=2200(1+r)ˆ5 ( ˆ5 is the exponent for 5 )

Syah work as senior designer in creative design company. he is an imaginative person and always updates himself with the latest technology and software. and he

Which is an equation of a circle with center (5, 0) that passes through the point (1, 1)? HELP ME PLEASE!! Answer Choices: A.) (x - 1)2 + (y - 1)2 = 17B.) (x +

abbie spent 5/8 of her money and saved the rest. if she spent 45,how much money did she have at first?

The most significant result of the Bonus Army March was the (A) passage in 1936 of a law allowing World War I veterans to cash in their bonus certificates nine

abbie spent 5/8 of her money and saved the rest. if she spent 45,how much money did she have at first?

Why are all 6 digit Fredholl numbers composite