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3 years ago

Simplify (4x − 6) + (3x + 6). 7x 7x − 12 x 7x + 12

Mathematics

1 answer:

noname [10]3 years ago

5 0

Answer:

Step-by-step explanation:

$\left(4x-6\right)+\left(3x+6\right)\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=4x-6+3x+6\\Group\:like\:terms\\=4x+3x-6+6\\\mathrm{Add\:similar\:elements:}\:4x+3x=7x\\=7x-6+6\\-6+6=0\\\\=7x$

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Determine which of the following formulas hold for all invertible n×n matrices A and B.

garik1379 [7]

Answer:

1 hold

2 hold

3 does not hold

4 hold

5 hold

6 hold

7 does not hold

8 does not hold

9 Does not hold

10 Hold

Step-by-step explanation:

The detailed step by step verification is as shown in the attachment

4 0

3 years ago

How to I find this? I tried using Pythagorean theorem, but it didn't work

jarptica [38.1K]

The Pythagorean theorem works.

$12^2+9^2=c^2$
$144+81=c^2$
$225=c^2$
$15=c$

Therefore the perimeter is 12 + 9 + 15 = 36 in. (B)

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3 years ago

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3 years ago

What does X equal how do I get it?

kvv77 [185]

X=20 because it's an equilateral triangle all the angles are 60 deg

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3 years ago

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.I want a way to solve such a problem

Ray Of Light [21]

Answer:

Step-by-step explanation:

The answer is 65. You just add the number of computer towers that fall into that category. So your sum would look like this:

Divisor: 5+ 12 + 21 + 15 + 12 = 65

The question does not ask you to do any more than figure out what you will be dividing by. Thank goodness it does not ask what you will be dividing into which is a whole lot more complicated problem.

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2 years ago