Answer:
sqrt(144) = ±12
Step-by-step explanation:
sqrt(144)
What number, when multiplied by itself, gives 144
12*12 = 144
-12*-12 = 144
sqrt(144) = ±12
Rounding 2 SF would give you 19
Answer:
7
Step-by-step explanation:
45/9 = 5
12 - 7 = 5
Answer: add 3
Step-by-step explanation:
1,000 copies --------------------------<span>$1'600
1 copy ------------------------------x???$
cross multiplication
1000 x = 1600
x= 1600 / 1000= 1.6 $</span>