Factor the following equation: 4x^2 - 81

The number of cases of a new disease can be modeled by the quadratic regression equation y = - 2x^2 + 44x + 8, where x represents the year. Which is the best prediction for the number of new cases in year 20? a. 234 b. 422 c. 618 d. 88

Find the area of the triangle below. Be sure to include the correct unit in your answer. 15cm 7cm 21cm

Using the digits 1-9, at most one time each, complete the first three terms of the arithmetic and geometric sequences. What sequences result in the greatest sum of their second terms? (e. g.

A particle is moving along the x axis so that its position at time t> / = 0 is given by s (t) = (t) ln (2t). Find the acceleration of the particle when the velocity is first zero.

Which statement is true? Correlation or association causation. Causation requires either correlation or association. Causation can exist without correlation or association. All correlation indicates causal links.

Two numbers total 10, and there difference is 12. Find a smaller of the two numbers.

Simplify the fraction. A. B. C. D.

2357111317 what is the next number

Antoinette solves the linear equation 3 (x minus 3) + 2 x + 9 = 2 x + 2 (x minus 1) using the steps shown below.

Why is it important to label your units?