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2 years ago

4x2 - 8x - 5

Mathematics

2 answers:

Alekssandra [29.7K]2 years ago

7 0

The correct answer is 56.8

nikdorinn [45]2 years ago

7 0

The correct answer is 56.8

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Use factoring to solve for all solutions of the quadratic equation.

Vsevolod [243]

◆ QUADRATIC RESOLUTIONS ◆

$we \: are \: given \: the \: expression \: - \\ \\ {x}^{2} + 25 = 0 \\ \\ {x}^{2} = - 25 \\ \\ (i = \sqrt{ - 1) } \\ ( {i}^{2} = - 1)\\ \\ {x}^{2} = - 25 \\ \\ {x}^{2} = 25 {i}^{2} \\ \\ x = + 5i \: \: \: \: or \: \: \: \: \: x = - 5i \: \: \: \: ans.$

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3 years ago

How do you right an equation for a slope?

sergeinik [125]

Answer:

The equation for slope is m = (y2 - y1)/(x2 - x1)

Step-by-step explanation:

In the above equation, m is the slope. So in order to find it, you need two points on the line. Those points would be (x1, y1) and (x2, y2). You can then stick their values in for the variables and solve for m (which is your slope).

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3 years ago

Solve the proportion below. 7/x = 19/144

timofeeve [1]

Answer:

$\boxed{\boxed{\tt B)\: 42}}$

<h3>Step-by-step explanation:</h3>

$\tt \cfrac{7}{x}=\cfrac{19}{114}$

<u>Cross multiply:</u>

(Multiply the numerator in the first fraction times the denominator in the second fraction, then multiply the numerator of the second fraction times the number in the denominator of your first fraction.)

$\longmapsto\tt 798=x\times \:19$

<u>Switch sides:</u>

$\longmapsto\tt x\times \:19=798$

<u>Divide both sides by 19:</u>

$\longmapsto\tt \cfrac{x\times \:19}{19}=\cfrac{798}{19}$

<u>Divide 798 by 19 = 42</u>

$\longmapsto\tt x=\cfrac{798}{19}$

$\hookrightarrow \tt x=42$

8 0

3 years ago

Read 2 more answers

Need help asap its sort of confusing

Lera25 [3.4K]

Length(l)= 15 inches right. since its a rectangle two sides of it are 15 inches, making it 30 inches in total. So now solve for x in this equation.
$30 + 2x = 54 \\ 54 - 30 = 2x \\ 24 = 2x \\ \frac{24}{2} = \frac{2x}{2} \\ 12 = x$
the x is the width of one of two width length(which are equivalent to each other)

8 0

3 years ago

Solve for x<br> .......................

alexandr402 [8]

I can’t see the picture tho

3 0

3 years ago