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tatuchka [14]
4 years ago
5

which expression is equivalent to the given expression? 3 (2a+5)....a) 11a. b)6a+15. c) 6a+5. or d) 21a

Mathematics
2 answers:
Archy [21]4 years ago
8 0

Answer:

The expression 3(2a+5) is equivalent to 6a + 15 .

Option (b) is correct .

Step-by-step explanation:

As given the expression in the question be as follows

= 3 (2a + 5)

First open the bracket of the above expression

= 3 × 2a + 3 × 5

Sloving the above

= 6a + 15

Therefore  the expression 3(2a+5) is equivalent to 6a + 15 .

Option (b) is correct .

Afina-wow [57]4 years ago
4 0
3(2a+5)
6a+15 divide both sides by 6
a=2.5
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Create an equivalent expression without parentheses <br><br> -2(3x+4)
Sindrei [870]

Answer:

-6x - 8

Step-by-step explanation:

-2(3x+4) = -6x - 8

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4 0
3 years ago
What is the value of x in the triangle below
Musya8 [376]

Answer:

x = 71°

Step-by-step explanation:

The angles of any triangle will always amount to 180°.

Which means: (Angle of A) + (Angle of B) + (Angle of C) = 180°

Placing the known values into that equation will always let you know the third angle of any triangle.

(Angle of A) + (Angle of B) + (Angle of C) = 180°

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Solve for x by subtracting 109° from both sides

x = 180° - 109°

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5 0
3 years ago
Copy the problems onto your paper, mark the givens and prove the statements asked.
natulia [17]

The statements and reasons for the proof are:

  1. CN ≅ WN [given]
  2. ∠C ≅ ∠W [given]
  3. m∠CNR ≅ ∠WNO [vertical angles theorem]
  4. ΔCNR ≅ ΔWNO [ASA theorem]
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<h3>What is the CPCTC and ASA Congruence Theorem?</h3>

When two triangles have two corresponding congruent angles and one corresponding included sides that are congruent, both triangles are congruent by ASA. By implication, the CPCTC states that since they are congruent triangles, all its corresponding parts are congruent to each other.

The statement for the proof along with the reasons in bracket are:

  1. CN ≅ WN [given]
  2. ∠C ≅ ∠W [given]
  3. m∠CNR ≅ ∠WNO [vertical angles theorem]
  4. ΔCNR ≅ ΔWNO [ASA theorem]
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Learn more about the CPCTC theorem on:

brainly.com/question/14706064

#SPJ1

8 0
2 years ago
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