Answer:
Step-by-step explanation:
2. a) x ≤ −5 b) 2 < x c) −5 ≤ x < 2 d) 2 > x e) −5 ≤ x ≤ 2
3. a) x ≤ 3 b) x ≥ 6 c) x > −4 d) 2 < x e) x < 3.6 f) 3 > x g) x > −1 h) 2 < x
30 is your mystery answer :)
3/20x = 9.......with x being the total cost of the food
x = 9 / (3/20)
x = 9 * 20/3
x = 180/3
x = 60 <===
A tessellation is the regular t<span>iling of a plane shape</span>
4 3/5 ≈ 5
1 1/5 ≈ 1
(4 3/5) +(1 1/5)
≈ 5 +1
≈ 6 . . . . . . . . . . . the estimated sum rounded to whole numbers
_____
Additional information:
As a refinement to your estimate, you can estimate the error. The first number is 2/5 less than 5. The second number is 1/5 more than 1, so the errors add up to
.. (2/5) +(-1/5) = 1/5
That is, your "estimate" of 6 is actually too high by 1/5. You can refine that estimated value by subtracting 1/5. 5 4/5 would be a closer "estimate."