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ValentinkaMS [17]
2 years ago
8

2. In triangle ABC, if DE || BC, then find the value of x.

Mathematics
1 answer:
salantis [7]2 years ago
6 0

Answer:

if DE ||BC then

AD/DB = AE/EC (By similarity of triangle)

\frac{x}{6 - x}  =  \frac{10}{14}

14x = 60 - 10x

24x = 60

x = 2.5

<h2>Mark me as brainliest ❤️</h2>

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6. In right triangle ABC, mZC=3y-10,
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Answer:

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Step-by-step explanation:

step 1

Find the value of y

we know that

The sum of the interior angles in a triangle must be equal to 180 degrees

In this problem

m∠A+m∠B+m∠C=180°

substitute the given values

90\°+(y+40)\°+(3y-10)\°=180\°

Solve for y

4y+120=180

4y=180-120

4y=60

y=15

step 2

<em>Find the measure of angle B</em>

m∠B=(y+40)°

substitute the value of y

m∠B=(15+40)=55°

step 3

<em>Find the measure of angle C</em>

m∠C=(3y-10)°

substitute the value of y

m∠C=(3(15)-10)=35°

The three interior angles are different

so

The three sides of the ABC triangle will also be different

therefore

The right triangle ABC is scalene

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2 years ago
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3 years ago
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NeTakaya

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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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what upAnswer:

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