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skelet666 [1.2K]
3 years ago
13

Question in picture im not smart

Mathematics
1 answer:
Lady_Fox [76]3 years ago
8 0
Which one do you want answered?
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What is the vertex of f (x) = 5x^2+20x-16
sergeinik [125]

Answer:

vertex = (- 2, - 36)

Step-by-step explanation:

Given a parabola in standard form : y = ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

x_{vertex} = - \frac{b}{2a}

f(x) = 5x² + 20x - 16 is in standard form

with a = 5, b = 20 and c = - 16

x_{vertex} = - \frac{20}{10} = - 2

Substitute x = - 2 into f(x) for corresponding y- coordinate

f(- 2) = 5(- 2)² +20(- 2) - 16 = 20 - 40 - 16 = - 36

vertex = (- 2, - 36)



3 0
3 years ago
Read 2 more answers
Match the algebraic expression to the real life scenario
Anarel [89]

The Correct mathes are :

  • 1. x² - 4

  • 2. 4x

  • 3. x/5

  • 4. 2x + 3

  • 5. 3x - 1

6 0
3 years ago
What does it equal 5/12 + 1\4
baherus [9]
5/12= 2.4
1/4=4
2.4+4=6.4
5 0
3 years ago
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During a recent rainstorm, 8 centimeters of rain fell in Dubaku's hometown, and 2.362, points, 36 centimeters of rain fell in El
kolezko [41]

Answer:

Hence, 5.64 centimeters of more rain fell in Dubaku's town than in Elliot's town.

Step-by-step explanation:

The amount of rain that fell in Dubaku's hometown is: 8 centimeters.

Amount of rain that fell in Elliot's hometown is: 2.36 centimeters.

We are asked to find how much more rain fell in Dubaku's town than in Elliot's town so it is calculated as the difference between the rain in both of there towns and is given by:

Difference in rain= 8-2.36

Difference in rain= 5.64 centimeters.

7 0
3 years ago
Solve 7x^2–20x = 3.<br><br><br><br> ;
sasho [114]

Answer:

x=3, -1/7

Step-by-step explanation:

7x^2-20x-3=0

Factor.

(x-3)(7x+1)=0

x-3=0 ⇒ x=3

7x+1=0 ⇒7x=-1 ⇒x= -1/7

3 0
3 years ago
Read 2 more answers
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