Which of the following equations is quadratic?

1. x (x2 + 1) = 0

2. 5 (4x + 2) = 3

3. (x + 3) (x + 4) = 5

A cheetah ran 704 feet in 8 seconds, and then another 328 feet in 4 seconds. What was the cheetah's average speed?

In a scale drawing of the solar system, the scale is 1 mm = 500 km. For a planet with a diameter of 7000 kilometers, what should be the diameter of the drawing of the planet?

What is the conjugate of 6 + 4i?

The length, width, and height of a rectangular box are represented by 4x, x+4, and 3x-2, respectively. When the volume is expressed as a polynomial in standard form, what is the coefficient of the 2nd term?

A student wants to determine whether or not a value in her data is an outlor. She has calculated Q, 4, median 5, and Q, - 10. Where is the upper fence? Choose the correct answer below 1.19 2. 14 3. 13 4. Unable to tell from the data given.

The length of one side, s, of a shipping box is s (x) = ^3√2x, where x is the volume of the box in cubic inches. A manufacturer needs the volume of the box to be between 108 in. 3 and 256 in. 3.

An ellipse is represented by the equation (y-3) ^2/169 + (x+6) ^2/144=1 each directrix of this ellipse is a (A) horizontal line that is 5 units (B) vertical line that is five units (C) horizontal line that is 33.8 units (D) vertical line that is 33.

2 pears cost as much as 3 apples. if the total cost of 2 pears and 3 apples is $2, what is the cost of 12 apples?

Work out the volume of a cubeboid 10cm by 3cm by 2cm

There are 166 South American animals in a zoo. That is 55 more than half the number of African animals in the zoo. Enter an equation you could use to find n, the number of African animals in the zoo.