Which of the following statements must be true to prove lines m and n are parallel? Question 10 options:

A)

∠1 ≅ ∠6

B)

∠4 ≅ ∠8

C)

m∠2 + m∠6 = 180°

D)

m∠3 + m∠5 = 180°

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

What is the number 321,000,000 in scientific notation? also what is the number? ?