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Maksim231197 [3]
2 years ago
5

How do you Factor 6y^2-5y-21

Mathematics
2 answers:
ahrayia [7]2 years ago
6 0

Answer:

(2y+3)*(3y-7)

Step-by-step explanation:

6y^2+9y-14y-21

3y(2y+3)-7(2y+3)

(2y+3)*(3y-7)

Katarina [22]2 years ago
5 0

Answer:

(2y+3) (3y-7)

hope it helps;)

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A rectangle has a width of 2cm and a perimeter of 25cm. Find the length and the area .
Gwar [14]

2w + 2l = 25

2 * 2 + 2l = 25

<em><u>Simplfiy.</u></em>

4 + 2l = 25

<em><u>Subtract 4 from both sides.</u></em>

2l = 21

<em><u>Divide both sides by 2.</u></em>

l = 10.5

Now that we have the value of l, we can find the area.

A = lw

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Answer:

  1.  9 < s < 17

  2.  5 < MN < 19

  3.  AD > BD

Step-by-step explanation:

1. The triangle inequality tells you the sum of any two sides of a triangle must exceed the length of the other side. (Some versions say, "must be not less than ..." rather than "must exceed.") In practice, this means two things:

  • the sum of the shortest two sides is greater than the length of the longest side
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Here, we can use the latter fact to write the desired inequality. The difference of the given sides is 13 -4 = 9; their sum is 13 +4 = 17. The third side must lie between 9 and 17. If that side length is designated "s", then ...

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(If you don't mind a "triangle" that looks like a line segment, you can use ≤ instead of <.)

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2. Same as (1) using different numbers.

  12 -7 < MN < 12 +7

  5 < MN < 19

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3. Side CD is congruent to itself, and side CA is shown congruent to side CB. This means the requirements of the Hinge Theorem are met. That theorem tells you the longer side is opposite the greater angle:

  AD > BD

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3 years ago
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Your choices of answers are not clear, is the letter x a variable or a multiplication?

If it is possible, take a picture of your question.

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