$2x^2+x-1=2\ \ \ |-2\\\\2x^2+x-3=0\\\\2x^2+3x-2x-3=0\\\\x(2x+3)-1(2x+3)=0\\\\(2x+3)(x-1)=0\iff 2x+3=0\ \vee\ x-1=0\\\\2x+3=0\ \ |-3\\2x=-3\ \ \ |:2\\x=-\frac{3}{2}\\\\x-1=0\ \ \ |+1\\x=1$

Answer: C 1, -3/2

4 0

3 years ago

How many dogs do I have if I give two away

Helen [10]

Answer:

Two less dogs

Your situation can be defined as x-2, where x was the number of dogs. Since the number of original dogs was not specified, two less dogs is the corrext answer

3 0

3 years ago

A box of Jell-O costs $0.50, and makes 2 cups. How much would it cost to fill a swimming pool 4 feet deep, 8 feet wide, and 12 f

garik1379 [7]

Answer:

$11,520

Step-by-step explanation:

4 * 8 * 12 = 384 cu ft.

384 * 7.5 = 2880 gallons

There are 16 cups in a gallon

2880 * 16 = 46,080 cups

46,080/2 * .50 = $11,520

6 0

3 years ago