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daser333 [38]
3 years ago
8

HELP MEEEE PLEASEEEEEEEEEEEEEE

Mathematics
2 answers:
Agata [3.3K]3 years ago
8 0

Answer:

a = 4

Step-by-step explanation:

a^2 + b^2 = c^2

a= ?

b= 3

c= 5 (c is always the hypotenuse)

*plug in given values

a^2 + 3^2 = 5^2

a^2 + 9 = 25

-9 -9

a^2 = 16

*find the square root

sqrt(a) = sqrt(16)

a = 4

Makovka662 [10]3 years ago
3 0

Answer:

a = 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

<u>Trigonometry</u>

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

  • a is a leg
  • b is another leg
  • c is the hypotenuse<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

Leg <em>a</em> = <em>a</em>

Leg <em>b</em> = 3

Hypotenuse <em>c</em> = 5

<u>Step 2: Solve for </u><em><u>a</u></em>

  1. Substitute in variables [Pythagorean Theorem]:                                          a² + 3² = 5²
  2. [Subtraction Property of Equality] Isolate <em>a </em>term:                                         a² = 5² - 3²
  3. Evaluate exponents:                                                                                       a² = 25 - 9
  4. Subtract:                                                                                                          a² = 16
  5. [Equality Property] Isolate <em>a</em>:                                                                          a = ±4

Since we are dealing with a regular right triangle and not a quadrant triangle, we use the positive root.

∴ a = 4

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If α and β are the roots of the equation ax2+bx+c=0,αβ=4ax2+bx+c=0,αβ=4 and a,b,,c are in A. P then α+β=
Rasek [7]

Considering the sum and the product of the roots of the quadratic equation, it is found that the numeric value of the expression is given as follows:

\alpha + \beta = -2.5

<h3>What are the sum and the product of the roots of a quadratic equation?</h3>

A quadratic equation is defined as follows:

y = ax^2 + bx + c, a \neq 0

The roots of the equation are given as follows:

\alpha, \beta

The sum of the roots is given as follows:

\alpha + \beta = -\frac{b}{a}

The product of the roots is given as follows:

\alpha\beta = \frac{c}{a}

In the context of this problem, the product is of 4, as \alpha\beta = 4 hence:

c/a = 4

c = 4a.

The coefficients are in an arithmetic progression, hence:

  • b = a + d. (d is the common difference of the sequence).
  • c = a + 2d.

We have that c = 4a, hence:

4a = a + 2d

2d = 3a

d = 1.5a.

Hence coefficient b is calculated as follows:

b = a + d = a + 1.5a = 2.5a.

Then the sum of the roots is given as follows:

\alpha + \beta = -\frac{b}{a} = -\frac{2.5a}{a} = -2.5

More can be learned about quadratic equations at brainly.com/question/24737967

#SPJ1

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