# Help with Algebra 2 Please?

0

What is the number of real solutions?

12×2 – 11x = 11

two real solutions

one real solution

cannot be determined

no real solutions

• 3. What is the number of real solutions?

12×2 – 11x = 11 (1 point)

(1 pt) two real solutions

(0 pts) one real solution

(0 pts) cannot be determined

(0 pts) no real solutions

1 /1 point

1. During a manufacturing process, a metal part in a machine is exposed to varying temperature conditions. The manufacturer of the machine recommends that the temperature of the machine part remain below 141°F. The temperature T in degrees Fahrenheit x minutes after the machine is put into operation is modeled by T = –0.005×2 + 0.45x + 125. Will the temperature of the part ever reach or exceed 141°F? Use the discriminant of a quadratic equation to decide. (1 point)

(0 pts) yes

(1 pt) no

• lesson 6 the quadratic formula algebra unti 2

1.use the quadratic formula to love the equation -4x^2-3x+2 (1point)

A

1. A landscaper is desinig a flower garden in the shape of a trapozoid

C

1. what is the number of the real solution 12x^2-11x=11

A

1. during a manufacturing process, a metal part in a machine is expossed to varying tempature contidons.

NO

• We have 12x^2 – 11x = 11

Therefore, 12x^2 – 11x – 11 = 0

Now we have a quadratic equation, and we can use (-b +/- sqrt(b^2-4ac))/2a.

With a little calculation we get (1/24)(11+sqrt(649)) and (1/24)(11-sqrt(649)).

There for we get TWO REAL SOLUTIONS, one negative, one positive.

Source(s): Math Senior at Large University
• if you use the quadratic formula and estimate you can get 2 approximate solutions

12x^2-11x-11=0

a=12 b=-11 c=-11

x=11+/- sq rt 11^2-4(12)(-11)/ 24

x=11+/- sq rt 121+ 528/24

x=11+/- sq rt 649/ 24

x=11+ sq rt 649 / 24 x=11- sq rt 649/ 11

x=11+ 25.48/ 24 or x=11- 25.48/24

x~ 36.48/24 or -14.48/24

x~ 1.52 or -0.6033..

• 12x^2 – 11x = 11

x (12x – 11) = 0

x=0 or (12x-11)=0

Therefore, x=0 or x= 11/12

Source(s): Own practice

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