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Jobisdone [24]
3 years ago
6

(2ab+9a-4) - (ab+2)

Mathematics
1 answer:
skad [1K]3 years ago
7 0

Answer:

\boxed{\bold{ab+9a-6}}

Step-by-step explanation:

Remove parenthesis: (a) = a

\bold{2ab+9a-4-\left(ab+2\right)}

\bold{-\left(ab+2\right): \ -ab-2}

\bold{2ab+9a-4-ab-2}

Simplify \bold{2ab+9a-4-ab-2}

\bold{ab+9a-6}

Regards,

   Mordancy

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3 years ago
What steps should i take ?
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i'm not sure but i think it might be this answer?

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5 0
3 years ago
A candy company designs a package to hold chocolates. The height of the container is 13 inches and the diameter of its bottom is
leva [86]

The best model for the package is a cone and the approximate surface area is 258 square inches.

<h3>How to illustrate the information?</h3>

From the information given, it was stated that the diagram shows a shape with circular base and curved surface meeting at a point. The diameter of the base is labeled 9 inches and the height of the shape is labeled 13 inches.

In this case, the information given about the diagram shows that it's a cone.

Also, given the information, the total surface area of the cone that has a slant height and diameter is given as:

= π(d/2)(d/2 + l)

In such a situation, it should be noted that d represents the diameter in the question. The surface area is the total area that's covered by its surface.

Therefore, the best model for the package is a cone and the approximate surface area is 258 square inches.

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7 0
2 years ago
Solve each polynomial equation.
spayn [35]

Answers:

15) x = 8, \frac{1}{3}, - \frac{2}{5}

16) x = 9, \frac{5+\sqrt{17}} {2}, \frac{5 -\sqrt{17}} {2}

17) x = 6, -\frac{3+i\sqrt{11}} {10}, -\frac{3-i\sqrt{11}} {10}

<u>Step-by-step explanation:</u>

15x³ - 119x² - 10x + 16 = 0

\frac{p}{q}: \frac{16}{15}:+/- \frac{1*2*4*8*16}{1*3*5*15}

So, the possible rational roots are: +/-   1, 2, 4, 8, 16,\frac{1}{3},\frac{2}{3},\frac{4}{3},\frac{8}{3},\frac{16}{3},\frac{1}{5},\frac{2}{5},\frac{4}{5},\frac{8}{5},\frac{16}{5},\frac{1}{15},\frac{2}{15},\frac{4}{15},\frac{8}{15},\frac{16}{15}

Use synthetic division with each one until you find a remainder of zero.  I am not going to go through each one because it is too time consuming, however, the first one that works is x = 8

(x - 8)(15x² + x - 2)    

Next, factor 15x² + x - 2 using any method

(x - 8)(3x - 1)(5x + 2)

Now, solve for x.

x = 8, x = \frac{1}{3}, x = -\frac{2}{5}

*******************************************************************

For #16 & 17, follow the same process as above.

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