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galben [10]
3 years ago
9

HELP PLEASE ASAP I NEED HEP

Mathematics
1 answer:
inessss [21]3 years ago
6 0

Answer:

3

Step-by-step explanation:

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I need help answering
Slav-nsk [51]
13 *72.10 = 937.30 rupees

3 0
3 years ago
Solve the following system of equations and show all work. y = x^2 + 3 y = x + 5 (10 points)
svetoff [14.1K]

Answer:

(- 1, 4 ) and (2, 7 )

Step-by-step explanation:

Given the 2 equations

y = x² + 3 → (1)

y = x + 5 → (2)

Substitute y = x² + 3 into (2)

x² + 3 = x + 5 ← subtract x + 5 from both sides

x² - x - 2 = 0 ← in standard form

(x - 2)(x + 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 2 = 0 ⇒ x = 2

x + 1 = 0 ⇒ x = - 1

Substitute these values into (2) for corresponding values of y

x = 2 : y = 2 + 5 = 7 ⇒ (2, 7 )

x = - 1 : y = - 1 + 5 = 4 ⇒ (- 1, 4 )

4 0
4 years ago
Does anyone know the answer to this?
denis23 [38]
I cant rly do all the work rn buy if you add them together and set them equal to 180° you’ll get the answer
5 0
3 years ago
The table shows input and output values of the function y = x2 + 12x – 2. What is an approximate solution of the equation x2 + 1
romanna [79]

Answer:

The solutions for the equations are x = 0.1644 and x = -12.1644

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this question:

x^{2} + 12x - 2 = 0

So

a = 1, b = 12, c = -2

\bigtriangleup = 12^{2} - 4*1*(-2) = 152

x_{1} = \frac{-12 + \sqrt{152}}{2} = 0.1644

x_{2} = \frac{-12 - \sqrt{152}}{2} = -12.1644

The solutions for the equations are x = 0.1644 and x = -12.1644

5 0
3 years ago
Simplify 3^2/2-4-7/5-4
kramer

Answer:

Step-by-step explanation:

Write each expression with a common denominator of 15 15 , by multiplying each by an appropriate factor of 1 1 . Tap for more steps... Multiply 173 17 3 and 55 ...

8 0
4 years ago
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