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joja [24]
3 years ago
9

Al sumar 2x+5y-4z+9 y 2x-4y+6 se obtiene?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0

Answer: (Responder)

4x + y + 15 – 4z

Step-by-step explanation: (Explicación paso a paso)

(2x + 5y – 4z) + (9 + 2x – 4y + 6)

Group Like Terms (Agrupar términos similares)

2x + 2x + 5y – 4y – 4z + 9 + 6

Add Similar Elements (Agregar elementos similares)

4x + 5y – 4y – 4z + 9 + 6

4x + y – 4z + 9 + 6

Add The Numbers (Suma los números)

4x + y + 15 – 4z

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The area of a triangle is equal to bh/2.
The base here is 8 and the height is 3.
8*3=24
24/2=12
The answer is B, 12 yd^2
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3 years ago
If AD is an altitude of ABC, then
serg [7]

Answer:

ADB is C. 90 degrees.

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3 years ago
How would you find the surface area of the figure represented by the given net? (Note: The area of each circular base is the sam
ioda

Answer:

Add 1,105.28 + 200.96 + 200.96.

Step-by-step explanation:

we know that

The surface area of the cylinder is equal to

SA=2B+LA

where

B is the area of the circular base

LA is the lateral area

In this problem we have

B=200.96\ mm^{2}

LA=1,105.28\ mm^{2}

substitute

SA=2(200.96)+1,105.28

SA=1,105.28+200.96+200.96

SA=1,507.2\ mm^{2}

7 0
4 years ago
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Simplify the expression. Explain each step. <br> 6(2b)
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Answer:12b

Step-by-step explanation:

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We have only one variable

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3 years ago
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Jen and her friends would like a curved pit to be included in next year’s obstacle course. they found this equation to model the
Pie

Considering the vertex of the quadratic function, it is found that:

A robot traveling along the surface of the curved pit reaches a minimum depth of -22.25 feet.

<h3>What is the vertex of a quadratic equation?</h3>

A quadratic equation is modeled by:

y = ax^2 + bx + c

The vertex is given by:

(x_v, y_v)

In which:

  • x_v = -\frac{b}{2a}
  • y_v = -\frac{b^2 - 4ac}{4a}

Considering the coefficient a, we have that:

  • If a < 0, the vertex is a maximum point.
  • If a > 0, the vertex is a minimum point.

In this problem, the function is given by:

y = 0.75x² - 13.5x + 57.75.

Which means that the coefficients are a = 0.75 > 0, b = -13.5, c = 57.75.

Thus, the minimum value is given by:

y_v = -\frac{(-13.5)^2 - 4(0.5)(57.75)}{4(0.75)} = -22.25

Thus:

A robot traveling along the surface of the curved pit reaches a minimum depth of -22.25 feet.

More can be learned about the vertex of a quadratic function at brainly.com/question/24737967

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