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Murljashka [212]
3 years ago
12

Solve for the unknown variable. -7x + 5 = 61

Mathematics
2 answers:
Gwar [14]3 years ago
4 0

Answer:

C, -8

Step-by-step explanation:

Subtract 5 from both sides then divide -7 to both sides to get X = -8

VladimirAG [237]3 years ago
3 0
I’m talking about a kite man like 65 inches
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V = rw

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An item costs $430 before tax, and the sales tax is $25.80.
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3 years ago
Select the two values of x that are roots of this equation x^2-5x+2=0
Nataly [62]

The roots of the equation is x = 4.56 OR x = 0.44

<h3>Quadratic equation</h3>

From the question, we are to determine the roots of the given equation

The given equation is

x² -5x +2 = 0

Using the formula method,

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

In the given equation,

a = 1, b = -5, c = 2

Putting the values into the formula,

x =\frac{-(-5) \pm \sqrt{(-5)^{2}-4(1)(2) } }{2(1)}

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x =\frac{5 \pm \sqrt{17} }{2}

x =\frac{5 + \sqrt{17} }{2} OR x =\frac{5 - \sqrt{17} }{2}

x =\frac{5 + 4.12}{2} OR x =\frac{5 - 4.12}{2}

x =\frac{9.12}{2} OR x =\frac{0.88}{2}

x = 4.56 OR x = 0.44

Hence, the roots of the equation is x = 4.56 OR x = 0.44

Learn more on Quadratic equation here: brainly.com/question/8649555

#SPJ1

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