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hammer [34]
3 years ago
15

In triangle JKL, an angle bisector drawn from vertex K intersects the opposite side at point P.if JKL is 2y+25 and PKL is 8y - 1

7, what is the measure of JKL.show all of your work.

Mathematics
1 answer:
german3 years ago
4 0

Answer:

Therefore,

\angle JKL=34.08\°Step-by-step explanation:

Given:

KP is the angle bisector of ∠ JKL,

∠JKL = 2y + 25

∠ PKL = 8y - 17

To Find:

∠ JKL = ?

Solution:

KP is the angle bisector of ∠ JKL, .. given

Angle bisector divides the angle in two equal parts such that,

\angle JKL=2\times \angle PKL

Substituting the values we get

2y+25=2(8y-17)

Apply Distributive Property we get

2y+25=2\times 8y-2\times 17=16y-34\\\\16y-2y=34+25=59\\\\14y=59\\\\y=\dfrac{59}{14}=4.54

Now substitute y in JKL

\angle JKL=2 \times 4.54+25=34.08\°

Therefore,

\angle JKL=34.08\°

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Complete question :

Alexandra and Chi compete in an​ Olympic-type triathlon consisting of a 1.5 km ​swim, a 40 km bicycle​ ride, and a 10 km run. There are two transitions in the race where the participants take time to change from one mode of the race to another. Their times from the race are shown. Complete questions 1dash4 below.

How long does it take Alexandra to complete the triathlon. Write a linear equation to model total time t in hours.

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

SWIM:

Alexandra __5km/hr

Chi _______ 6km/hr

Transition 1:

Alexandra __ 4 minutes

Chi _______ 5 minutes

CYCLE:

Alexandra __15km/hr

Chi _______ 15km/hr

Transition 2:

Alexandra __ 3 minutes

Chi _______ 5 minutes

RUN:

Alexandra __6km/hr

Chi _______ 7.5km/hr

Distances:

swim distance = 1.5km

bicycle​ ride distance = 40km

run distance = 10km

Time taken by Alexandra :

time = distance / speed

Swim time = 1.5km / 5km/hr = 0.3 hr

Transition 1 = 4/60 = 0.067 hr

Cycle time = 40km / 15km/hr = 2.67 hours

Transition 2 = 3/60 = 0.05 hr

Run time = 10 / 6km/hr = 1.67 hrs

Total time(t) in hours taken by Alexandra :

(0.3 + 0.067 + 2.67 + 0.05 + 1.67) hrs = 4.757 hours

Time taken by Chi :

time = distance / speed

Swim time = 1.5km / 6km/hr = 0.25 hr

Transition 1 = 5/60 = 0.083 hr

Cycle time = 40km / 15km/hr = 2.67 hours

Transition 2 = 5/60 = 0.083 hr

Run time = 10 / 7.5km/hr = 1.33 hrs

Total time(t) in hours taken by Chi

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Step-by-step explanation:


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Answer:

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Step-by-step explanation:

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Answer:

3. The x-coordinate of point P is 6. Since P(6,1).

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Step-by-step explanation:

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