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Alina [70]
3 years ago
10

Susie is solving the quadratic​

Mathematics
1 answer:
topjm [15]3 years ago
5 0

Answer:

Option (D)

Step-by-step explanation:

Standard equation of a quadratic function is,

ax² + bx + c

Comparing this function with the given quadratic function,

f(x) = 2x² - 4x - 3

a = 2, b = -4 and c = -3

By using quadratic formula to get the value of x,

x = \frac{-b\pm \sqrt{b^2-4ac} }{2a}

  = \frac{-(-4)\pm \sqrt{(-4)^2-4(2)(-3)} }{2(2)}

  = \frac{4\pm\sqrt{16+24}}{4}

  = \frac{-4\pm \sqrt{40}}{4}

  = \frac{-2\pm \sqrt{10}}{2}

Therefore, Susie made a mistake in step IV.

Option (D) is the answer.

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(400 × 3 ) + (70 × 3) + (5 × 3)

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2 years ago
Find the value of x such that l ⊥ m. A) 10.7 B) 16 C) 46 D) 48
dsp73

Answer:

<h3>B. 16°</h3>

Step-by-step explanation:

The diagram lacks the appropriate figure. Find the figure attached. If the line I is perpendicular to m, this means that the sum of the given angles will be equal to 90° as shown;

(3x+5)° + 37° = 90°

open the parenthesis

3x+5 + 37° = 90°

3x+42 = 90

subtract 42 from both sides of the equation

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Divide both sides of the resulting equation by 3;

3x/3 = 48/3

<em>x = 16</em>

<em>Hence the value of x is 16°</em>

4 0
3 years ago
Can someone plz help me out..... ​
Shtirlitz [24]

Answer: The correct answer is 3

Step-by-step explanation:

4³ = 64

The way to check your work is to multiply 4 x 4 x 4:

16 x 4 = 64

4 0
3 years ago
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Answer:

32.1 pounds

Step-by-step explanation:

Given data

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