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icang [17]
3 years ago
14

Write the quadratic equation in standard form and then choose the value of "b." (2x - 1)(x + 6) = 0 -4 11 12

Mathematics
1 answer:
frozen [14]3 years ago
7 0

Answer:

2x^2 + 11x - 6

b = 11

Step-by-step explanation:

To write the equation in standard form, use the distributive property to multiply. Then combine like terms.

(2x - 1)(x + 6)

2x^2 - x + 12x - 6

2x^2 + 11x - 6

Now written in the standard form of a quadratic ax^2 + bx + c, the value of b here is 11.

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2 years ago
A book has 12 chapters. The mean length of the chapters is 40 pages. How many total pages are there in the 12 chapters?
amm1812

Answer:

480

Step-by-step explanation:

Important Information:

A Book Has 12 Chapters.

The Mean length of the chapters is 40 pages.

Question to Answer:

How many total pages are there in the 12 chapters?

Explanation/Solution:

Let's assume that the total number of pages in the book is "x" pages.  

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7 0
2 years ago
I need help for this also​
lubasha [3.4K]

Answer:

  a) h = 6 2/17

  b) k = 3 8/17

Step-by-step explanation:

We can make a list of corresponding sides:

  AB (17 cm) and DE (13 cm)

  BC (15 cm) and EC (8+k cm)

  CA (8 cm) and CD (h cm)

Because the triangles are similar, we know corresponding sides are proportional.

<h3>a)</h3>

  CD/CA = DE/AB

  h/8 = 13/17

  h = 8(13/17) = 6 2/17

__

<h3>b)</h3>

  EC/BC = DE/AB

  (8+k)/15 = 13/17

  8 +k = 15(13/17)

  k = 11 8/17 -8 = 3 8/17

5 0
2 years ago
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