if 5 school books weigh an average of 800g, and 4 of them weigh 400g, 600g,800g, and 1000g respectively, the 5th book weighs

It appears that the books have a scale factor for each one, meaning that the 5th book would be 1200g.

To check this regarding the average weight, add the weight of all 5 books together and divide by 5.

(400 + 600 + 800 + 1000 + 1200) / 5 = 800

the fifth book weighs 1200g

Step-by-step explanation:

(400+600+800+1000+x)/5=800 =>

(2800+x)/5=800 =>

x=(800×5)-2800=>

x=4000-2800=>

x=1200

answer: this doesnt make any sense especially the photo.

step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it