Answer: x = 3
Divide both sides by three: 3x ÷ 3 = 9 ÷ 3
x = 3
Answer:
(x+7)(x-7)
Step-by-step explanation:
x²-49
=x²-7²
=(x+7)(x-7)
Answer:I’m not entirely sure but I will google search to find out for you ok. Ps. Please answer my question that I posted!
Step-by-step explanation:
Th z-score is given by:
z=(x-μ)/σ
where:
μ-mean
σ-standard deviation
hence:
z=(240-200)/20
z=2
