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2 years ago

Which step can be used to prove that triangle EFG is also a right triangle?

Mathematics

1 answer:

Darya [45]2 years ago

8 0

EFG is the same as angle KLM. therefore, it is the reflection of the angle KLM

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Solve for x.

Ivahew [28]

ANSWER

$x=\frac{2-\sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

We have

$3x^2-4x-2=0$

Since we cannot factor easily, we complete the square.

Adding 2 to both sides give,

$3x^2-4x=2$

Dividing through by 3 gives

$x^2-\frac{4}{3}x= \frac{2}{3}$

Adding $(-\frac{2}{3})^2$ to both sides gives

$x^2-\frac{4}{3}x+(-\frac{2}{3})^2= \frac{2}{3}+(-\frac{2}{3})^2$

The expression on the Left Hand side is a perfect square.

$(x-\frac{2}{3})^2= \frac{2}{3}+\frac{4}{9}$

$\Rightarrow (x-\frac{2}{3})^2= \frac{10}{9}$

$\Rightarrow (x-\frac{2}{3})=\pm \sqrt{\frac{10}{9}}$

$\Rightarrow (x)=\frac{2}{3} \pm {\frac{\sqrt{10}}{3}$

Splitting the plus or minus sign gives

$x=\frac{2- \sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

3 0

3 years ago

Read 2 more answers

Please help me i would appreciate it

Zielflug [23.3K]

Answer: oh gosh, rlly bad at math... let me do the maths quick, and will edit my answer to the correct answer i dont have enough time, -7a+11

Step-by-step explanation:

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2 years ago

-2/3(4x - 2) = 1/4(3x +1)

aleksley [76]

Answer:????

Step-by-step explanation:

i don’t know shister

8 0

3 years ago

A right rectangular pyramid is sliced vertically (down) by a plane passing

Anton [14]

A right rectangular pyramid when sliced vertically, the shape of the cross-section is known as Triangle.

<h3>What is A triangle?</h3>

This is known to be a kind of shape that is said to be in a closed form and it is also known to be a 2-dimensional shape that has 3 sides, 3 angles, and also 3 vertices.

Note that when the when the right rectangular pyramid is sliced vertically (down) by a plane passing through the of the pyramid, the new shape of the cross-section is a triangle.

See full question below

A right rectangular pyramid is sliced vertically (down) by a plane passing through the of the pyramid. What is the shape of the cross-section?

A. Rectangle

B. Pyramid

C. Triangle

D. Trapezoid

See full question below

Learn more about triangle from

brainly.com/question/17335144

#SPJ1

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1 year ago

Help plss helppppppppppppppppppppppppppppppppppppppppp

mr_godi [17]

Answer:

okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk

Step-by-step explanation:

answer mujha nahi pata aaaaaaaaaàaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

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3 years ago