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 :)
Answer:
Happy Earth Day to u too.
Step-by-step explanation:
1) Plant a sapling
2) Draw a poster related to Earth Day
3) Color a picture of the Earth/ tree
4) Decorate ur room with plants
5) Prepare a speech on Earth Day
6) Do T-shirt designing with Earth as a design
7) Buy a paper/ cloth bag
8) Recycle what u use
9 Avoid plastic
10) Use bikes or walk instead of vehicles
Answer:
C = 5
Step-by-step explanation:
Distribute the 3
3c - 18 + 6c = 27
Adding like terms
9c - 18 = 27
Add 18 to both sides
9c = 45
Dividing both sides by 5
C = 5
252, 210 divided by 5 = 42, 42 x 5 = 210 + 42= 252
1.001 is the smallest :)))
