Answer:
Separate the stones into 3 groups of 3.
Let's call each the three groups A, B, and C.
1) Place group A and group B on the two plates of the scale. There are two possible outcomes i) and ii) below:
i) The groups have different weights. A is heavier than B or B is heavier than A. Take the heavier group. Place two stones from this group on the scale. If one is heavier than the other, this is it. If they are equal, the stone not on the scale is it.
ii) Groups A and B have equal weights. The heavier stone in in group C. Using group C, place two stones from this group on the scale. If one is heavier than the other, this is it. If they are equal, the stone not on the scale is it.
Diameter = circumference / pi = 28.26 / pi = 9.00 units (to the nearest hundredth)
the difference range is the highest and smallest number and the interquartile range is the highest and lowest number in the Q2 on the box plot pretty much :) brainliest please
Answer:
(x - 1)(x + 1)(x + 3).
Step-by-step explanation:
x^3 + 3x^2 - x - 3 Factor by grouping:
= x^2(x + 3) - 1(x + 3) x+3 is common .
= (x^2 - 1)(x + 3) x^2 - 1 is the difference of 2 squares.
= (x - 1)(x + 1)(x + 3).
1,2, and 3 is the correct answer.
