Find the value of y, rounded to the nearest tenth. a. 2.4 b. 3.2 c. 3.7 d. 3.9

Option D is correct.

y ≈3.9 units

Step-by-step explanation:

Intersecting chord theorem states that if two chords intersects inside a circle

then; the product of the length of segments in one chords equal to the product of the segments of the other chord.

In a given circle:

Labelled the chords as A, B , C and D and intersecting point O.

OA= 9 units , OB = y units , OC= 5 units and OD = 7 units

Then, by intersecting chord theorem:

Substitute the given values to solve for y;

Simplify:

Divide both sides by 9 we get;

Therefore, the value of y rounded to the nearest tenth is, 3.9

5+2x=a

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proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc