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omeli [17]
4 years ago
10

If the measures of the angles of a triangle are represented by 2x, 3x-15 and 7x+15, the triangle is

Mathematics
2 answers:
garik1379 [7]4 years ago
5 0
The answer is (2)....................................
                    
yaroslaw [1]4 years ago
3 0
First you have to calculate value of x, as sum of all three angles of a triangle is 180°. that means
[2x] + [3x - 15] + [7x + 15] = 180, 12x - 15 + 15 = 180, 
12x = 180, x = 15,
angles are, {[2*15], [(3*15) - 15], [(7*15) + 15]} = {30, 30, 120}, 
here two angles are equal, that means triangle is isosceles.
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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]
  5. RN = ON [CPCTC]

<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]
  5. RN = ON [CPCTC]

Learn more about the CPCTC theorem on:

brainly.com/question/14706064

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8 0
2 years ago
Does 2 1/3-1 3/4 need require renaming
ANEK [815]

Answer:

\frac{7}{12}

Step-by-step explanation:

2 \frac{1}{3}  - 1 \frac{3}{4}

The fractions above are known as mixed numbers (that is, fractions that contain the combination of a whole number and proper fraction). The mixed numbers can equally be renamed as improper fractions. However, renaming can only occur the the mixed numbers are being transformed as below:

\frac{7}{3}  -  \frac{7}{4}

The transformation occur through a simple approach thus: for the first mixed number; 2 1/3 = 2 multiplied by 3 plus 1 divide by 3 equals 7/3. Similarly, mixed number 1 3/4 is transformed by this: 1 multiplied by 4 plus 3 divide by 4 equals 7/4.

Simplifying further to arrive at final result implies,

\frac{7}{3}  -  \frac{7}{4}

Take the LCM of the denominators (4 × 3 =12) and simplify thus:

=   \frac{28 - 21}{12}

=  \frac{7}{12}

6 0
3 years ago
What's does 5 times 2 equal
adelina 88 [10]
It equals 10 bc count 5+5=10
4 0
4 years ago
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Identify three solutions of the graph shown. Please help
barxatty [35]
From the graph, we can see that the graph crosses the x-axis at the point (1.5, 0) the graph also passes through point (1, 1) and the graph crosses the y-axis at the point (0, 3).

Therefore, points (1.5, 0), (1, 1) and (0, 3) are some of the solutions of the graph.
5 0
4 years ago
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aksik [14]
858 divided by 22 is 39....hope this helps
3 0
4 years ago
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