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disa [49]
3 years ago
13

Evaluate x^2 − 4x + 5, when x = − 3

Mathematics
2 answers:
tigry1 [53]3 years ago
6 0

Answer:

\boxed{26}

Step-by-step explanation:

\mathsf{ {x}^{2}  - 4x + 5}

\mathrm{Plug \: the \: value \: of \: x}

⇒{( - 3)}^{2}  - 4 \times(- 3 )+ 5

\mathrm{Evaluate \: the \: power}

⇒\mathsf{9 - 4 \times(- 3 ) + 5}

\mathrm{Multiply \: the \: numbers}

⇒\mathsf{9 + 12 + 5}

\mathrm{Add  the  numbers}

⇒\mathsf{26}

Hope I helped!

Best regards!

Gnom [1K]3 years ago
3 0

Answer:

\huge\boxed{26}

Step-by-step explanation:

\sf x^2-4x+5\\Given \ that \ x = -3\\(-3)^2-4(-3)+5\\9+12+5\\26

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sergey [27]

Answer:

x=12

Step-by-step explanation:

The right side is a right triangle

The base is 1/2 of the bottom or 5

The height is x and the hypotenuse is 13

We can use the Pythagorean theorem

a^2 +b^2 = c^2

5^2 +x^2=13^2

25+x^2 = 169

Subtract 25 from each side

25-25+x^2 = 169-26

x^2 =144

Take the square root of each side

sqrt(x^2) = sqrt(144)

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3 years ago
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kolezko [41]

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4 0
2 years ago
Patients in a hospital are classified as surgical or medical. A record is kept of the number of times patients require nursing s
GREYUIT [131]

Answer:

Following are the solution to the given question:

Step-by-step explanation:

Given:

N= 177\\\\a=46\\\\b=52\\\\c=36\\\\d=43

\to \chi _{1}^{2}=\frac{N(ad-bc)^{2}}{(a+c)(b+d)(a+b)(c+d)}

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P-value= CHIDIST(0.032976,1) = 0.86.

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2 years ago
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