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zaharov [31]
3 years ago
9

What formula should be used when factoring the expression x3+27

Mathematics
2 answers:
vovikov84 [41]3 years ago
7 0

Answer:

a^3+b^3=(a+b)(a^2-ab+b^2)

Step-by-step explanation:

x^3+27=(x+3)(x^2-3x+9)

pashok25 [27]3 years ago
4 0

Answer: Rewrite 27 as 33 . Since both terms are perfect cubes, factor using the difference of cubes formula, a3−b3=(a−b)(a2+ab+b2) a 3 - b 3 = ( a - b ) ( a 2 + a b + b 2 ) where a=x and b=3 .

Step-by-step explanation:

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Andrews [41]

Answer:

C

Step-by-step explanation:

you are adding

6 0
3 years ago
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Tell if the measures 6, 14, and 13 make a triangle that is acute, right, or obtuse.
ycow [4]

Right angle - c²=a²+b²

Obtuse angle - c²>a²+b²

Acute angle - c²<a²+b²

To see which ones go into a, b, and c, know that the largest number is the hypotenuse (variable c). The other two letters can be either a or b, so it doesn't matter which place they are put it because you will get the same answer.

right angle 14²=6²+13²

196=36+169

196≠205

-----------------------

obtuse angle 14²>6²+13²

196>36+169

196>205 is false

-----------------------

So since it is not a right angle or an obtuse angle, that means that it's a right angle because it's the only option left. Though we now know that's the answer, I will still put down the steps.

acute angle 14²<6²+13²

196<36+169

196<205 is true so it's an acute triangle.

Hope this helps, now you know the answer and how to do it. Stay safe and healthy and HAVE A BLESSED AND WONDERFUL DAY! :-)  

- Cutiepatutie ☺❀❤

5 0
3 years ago
Find the mean median and mode of the deta set 1,6,3,9,6,8,4,4,4
Firlakuza [10]
Mode (most occurring) - 4
mean (average) - 8
median (middle number from least to greatest) - 4
4 0
4 years ago
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Can someone kindly explain and answer this for me please!
Lubov Fominskaja [6]

Answer:

25

Step-by-step explanation:

7 * 7 = 49

24 * 24 = 576

576 + 49 = 625

\sqrt{625} = 25

Please mark as brainliest

5 0
3 years ago
Read 2 more answers
What is the volume of this cube? Enter your answer as a decimal in the box. m³ Cube with a side length of 0.5 meters.
ch4aika [34]

volume = S^3

volume = 0.5^3 = 0.125 m^3

6 0
4 years ago
Read 2 more answers
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