To find an average you take the numbers to be averaged and add them together then You take the number and divide it by the number of numbers, in this case 4, and that gives you the average. on this problem you want to do the opposite. you know the average she wants, an 87, so you multiply it by 4. 87*4=348. then you add the three numbers you have (88,81 and 87) and you get 256. then you subtract 256 from 348 and you get 92. 92 is your answer to check just add 87+81+88+92=348 348/4=87 87 was the average she wanted. Hope this helped! good luck :)
The earliest civilizations developed between 4000 and 3000 BCE, when the rise of agriculture and trade allowed people to have surplus food and economic stability.
The ordered pair of point H is (1, -7).
The correct answer between all the choices given is the third choice. I
am hoping that this answer has satisfied your query about and it will be able
to help you, and if you’d like, feel free to ask another question.
