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qaws [65]
3 years ago
15

Which expressions are equivalent to 2r + (t + r) ?

Mathematics
2 answers:
Paraphin [41]3 years ago
7 0
None of the above.
2r + t+ r = 3r+ 2
tester [92]3 years ago
6 0
I think the answer is None of the above
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72 is what percent of 160?
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72/160=?

Divide 72 by 160 to find the percent.

72/160=0.45

72 is 45% of 160.

I hope this helps :)

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Find the value of m angle 3-m<1
emmainna [20.7K]

Answer:

The value of m\angle 3-m\angle 1 = 50^{\circ}

Step-by-step explanation:

Vertical Angle theorem: It is about the angles that are opposite to each other.

Also, vertical angle are congruent that means vertical angles are equal.

In the given figure; m\angle 3 and 70^{\circ} are vertical angle

then, by vertical angle theorem,  m\angle3 =70^{\circ}.

Supplementary angle: the sum of the angles whose measure on the straight line is 180 degree.

From the figure, 70^{\circ} , \angle 1 and m\angle 2 =90^{\circ} forms a straight line.

then, by the definition of Supplementary angle;

70^{\circ}+m\angle 1 +m\angle 2=180^{\circ}

Substituting the value of  m\angle 2 =90^{\circ} in above equation:

70^{\circ}+m\angle 1 + 90^{\circ} =180^{\circ} or

160^{\circ}+m\angle 1=180^{\circ}

Simplify:

m\angle 1=180^{\circ}-160^{\circ} =20^{\circ}

therefore,  m\angle 1= 20^{\circ} and m\angle 3=70^{\circ},

the value of m\angle3-m\angle1= 70^{\circ}-20^{\circ} =50^{\circ}.






7 0
3 years ago
How do I do this ?This is very hard please help
lutik1710 [3]

The measure of m<JMO is 20 degrees

The triangle JOK is a 60 degrees equilateral triangle. Hence the measure of m<O at the center is 60 degrees.

<h3>Angle at a point</h3>
  • The sum of the angle at a point is 360 degrees.

Since the base angles of triangle KOL and OLM are equal hence;

  • m<KOL + m<MOL + m<JOM + m<JOK = 360 (angle at a point)

Substitute the base angles and the equilateral angles to get angle JOM

80 + 80 + m<JOM + 60 = 360

m<JOM = 360 - 360 - 220

m<JOM = 140 degrees

<h3>Sum of angles in a triangle</h3>

Since the sum of angle in the triangle JOM is 180 degrees, hence;

2m<JMO + m<JOM = 180

2m<JMO = 180 - 140

2m<JMO = 40

m<JMO = 20 degrees

Hence the measure of m<JMO is 20 degrees

Learn more on angles here: brainly.com/question/25770607

5 0
3 years ago
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