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3 years ago

Simplify the expression 2(2+4v)

Mathematics

2 answers:

dybincka [34]3 years ago

8 0

Step-by-step explanation:

2(2+4v)

multiply 2 with the number in bracket

4+8v=0

8v= -4

v=-4/8

v= -1/2

Ronch [10]3 years ago

7 0

Step-by-step explanation:

2(2 + 4v)

4 + 8v

If you have to find the value of v

4 + 8v = 0

8v = - 4

V = - 4/8 = - 1/2

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In the given circle O, BC is diameter, OA is radius, DC is a chord parallel to chord BA and $m\angle BCD=30^\circ$ .

To find:

The $m\angle AOB$ .

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If a transversal line intersect two parallel lines, then the alternate interior angles are congruent.

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In triangle AOB, OA and OB are radii of the circle O. It means OA=OB and triangle AOB is an isosceles triangle.

We know that base angles of an isosceles triangle are congruent.

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$m\angle OAB=m\angle OBA$

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In triangle AOB,

$m\angle OAB+m\angle OBA+m\angle AOB=180^\circ$

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