codman385 codman385
  • 15-08-2020
  • Mathematics
contestada

PLEASE HELP!!!
Find the measure of WV¯¯¯¯¯¯¯¯¯. A. 8 B. 6 C. 7 D. 4

PLEASE HELP Find the measure of WV A 8 B 6 C 7 D 4 class=

Respuesta :

09pqr4sT
09pqr4sT 09pqr4sT
  • 15-08-2020

Answer:

[tex]\Huge \boxed{\mathrm{B. \ 6}}[/tex]

Step-by-step explanation:

We can apply the Intersecting Secant-Tangent Theorem.

TV is the secant.

VW is the tangent.

VW² = VT × VU

(x+6)² = (5+x+4) × (x+4)

Combine the terms in bracket.

(x+6)² = (x+9)(x+4)

Expand brackets on both sides of the equation.

x²+12x+36=x²+13x+36

Subtract x² from both sides.

12x+36=13x+36

Subtract 12x from both sides.

36=x+36

Subtract 36 from both sides.

0=x

WV = x+6

x=0

WV = 0+6 = 6

The measure of the tangent WV is 6.

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