All categories

3 years ago

F(x) = 2x^2-x-1 if f(x) = -1, what is x? What point(s) are on the graph of f ?

Mathematics

1 answer:

Elina [12.6K]3 years ago

8 0

Answer:

x = 0, x = 0.5 or 1/2 The points on the graph are ( -1/2 or -0.5,0 ) and ( 1,0 )

Step-by-step explanation:

2x^2-x-1 = -1

2x^2-x = 0

x(2x-1) = 0

x=0

x=0.5 or 1/2

You might be interested in

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is

Brilliant_brown [7]

The solution to the system of equations is (x, y) = (10, 14), where x is the number of 3-point questions and y is the number of 5-point questions. The appropriate choice is ...
The test contains 10 three-point questions and 14 five-point questions. (2nd selection)

6 0

3 years ago

Simplify the expression. p(p^-7 q^3)^-2q^-3

FinnZ [79.3K]

Answer:

Step-by-step explanation:

7323

4 0

3 years ago

Someone help I need help

kirill [66]

Ronald originally had 160 dollars.

123.45 + 36.55 = 160. That means that he had 160 dollars.

3 0

3 years ago

What is 5⅜ - 3⁸/⁹ ?

lesya692 [45]

Answer:

1 35/72

Step-by-step explanation:

7 0

3 years ago

The value of a house has increased by 5% the house is now valued at £609000 what is the value of the house before the increase?

lutik1710 [3]

Answer:

$Current \ price = 609000\\\\Let \ the \ original \ price \ be = x\\\\\% increase = 5 \% \ of \ x = \frac{5}{100} \times x = \frac{5x}{100}\\\\Price \ after \ increase, current\ price = \frac{5x}{100} + x\\\\$

$=> 609000 = \frac{5x}{100} + x\\\\=>609000 = \frac{105x}{100}\\\\=> x = \frac{609000 \times 100}{105}\\\\x = 580000$

Therefore original price = $580,000

3 0

2 years ago