A data is collected from Lab A, and this data is considered as the reference (standard). Sample mean is 12, SD is 2.4 and sample size if 16. Another set of data from Lab B have a mean of 10, SDB is 2.4 and nB=16. If we choose = 0.05, do you think mean of Lab B is close enough to be considered the “same” as that of Lab A? Why?

step-by-step explanation:

you need to give us more information since we can't answer

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)

i think the answer is b