Answer:
D.
Step-by-step explanation:
Ape x.
-243
Step-by-step explanation:
số dương nhân -3 thì đc số âm, số âm nhân với -3 để đc số dương.
vd: 1. -3 = -3 ; -3 .-3= 9 ;..... 81 . -3= -243
Answer:
15
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given 
To make A as the subject of the formula we need to rearrange
Divide by
throughout we get


<span>8 ≥ 16y
Divide both sides by 16.
0.5 </span>≥ y, or y ≤ 0.5.
The answer is A) y ≤ 0.5.