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Irina18 [472]
3 years ago
14

Best explained and CORRECT answer gets brainliest.

Mathematics
1 answer:
pochemuha3 years ago
4 0
The answer should be C,

To solve this question, we have to use the rule of triangle inequality. This means, lengths of the any 2 sides of a triangle added up, must be longer than the remaining side.

Therefore, we can try and see which one of the options fits the rule.

A.
35+25 > 10 ✔️
25 + 10 = 35❌
A cannot make a triangle.

B.
15 + 10 > 5 ✔️
10 + 5 = 15 ❌
B cannot make a triangle.

C.
35 + 45 > 55 ✔️
45 + 55 > 35 ✔️
35 + 55 > 45 ✔️
C can make a triangle.

D.
25 + 25 < 75 ❌
D cannot make a triangle.

Therefore, the answer should be C.
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Step-by-step explanation:

1. Expand by distributing sum groups.3x( {2x}^{2}  + 5x - 1) - 3( {2x}^{2}  + 5x - 1)

2. Expand by distributing terms.

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3.Expand by distributing terms.

{6x}^{3}  +  {15x}^{2}  - 3x - ( {6x}^{2}  +  15x - 3)

4. Remove parentheses.

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6. Simplify.

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Thus. the answer is,

{6x}^{3}  +  {9x}^{2}  - 18x + 3

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2 years ago
2a +5 - 3a -12 please
chubhunter [2.5K]

Answer:

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Step-by-step explanation:

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