Answer: No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.
Step-by-step explanation:
A representative sample has to be in proportion, and the diagram shows that the greater part is not represented in proportion. Because it is not represented in proportion, it is not a representative sample.
Answer: C
Answer:
(x+10)(x-10)
Step-by-step explanation:
both numbers can be squared so you have to take out the square and since 100 is negative one must be positive and one must be negative
U move 12, then it will become 52-12=4w (do u know why it bcme -12? Bcz if you move positive it will become negative. And if you move negative, it will become positive) then it would b like this 40=4w and bring over your 4 become 40/4=w (its multiply so u bring over it become division) and the ans is 10. Hope you understand me:)) and u plot 10 on ur no. line :>
Formula for P: P = 2W + 2L
Formula for A: A = WL
Here, P = 2(4 ft) + 2(7 ft) = (8+14) ft = 22 ft
and A = (4 ft)(7 ft) = 28 ft^2
