Answer:
see explanation
Step-by-step explanation:
a² - b² ← is a difference of squares and factors as
= (a - b)(a + b)
Given
9x² - 16 ← a difference of squares
= (3x)² - 4² → with a = 3x and b = 4
= (3x - 4)(3x + 4)
Answer: The proportion of new car buyers that trade in their old car has statistically significantly decreased.
Step-by-step explanation:
Since we have given that
p = 48% = 0.48
n = 115
x = 46
So,
So, hypothesis would be
So, test value would be
At 10% level of significance, critical value would be
z= 1.28
Since 1.28 < 1.72
So, we will reject the null hypothesis.
Hence, the proportion of new car buyers that trade in their old car has statistically significantly decreased.
Answer:
D
Step-by-step explanation:
6 and 3 can both be divided by 3, which gives u 2/1
Answer:
2nd option is true
Step-by-step explanation: