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3 years ago

Which of the triangles shown are scalene triangles?

Mathematics

2 answers:

OLEGan [10]3 years ago

8 0

Answer:

Triangle D

Step-by-step explanation:

Triangle A is an isoceles because two of the sides are equal in length.

Triangle B is a right isoceles triangle because two of the sides are equal in length and there is a right angle.

Triangle C is an isoceles because two of the sides are equal in length.

Triangle D is a scalene triangle becasue none of its sides are the same length.

romanna [79]3 years ago

8 0

Triangle D.

Triangle D has 3 different lengthened sides or in equal sides therefore it is a scalene triangle

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The perimeter of an equilateral triangle is 77 inches more than the perimeter of a square, and the side of the triangle is 55 i

miv72 [106K]

Answer:

143 inches

Step-by-step explanation:

Let the triangle be $s$ inches long.

Then the perimeter of the equilateral triangle will be $s+s+s=3s$ inches.

Let the length of the square also be $l$ inches.

Then the perimeter is $4l$

It was given that the perimeter of the equilateral triangle is 77 inches more than the perimeter of the square.

So we can write the relation

$3s=4l+77$

$\Rightarrow 3s-4l=77..eqn1$

Also, the side of the triangle is 55 inches longer than the side of the square.

So we write $s=l+55$ or $l=s-55...eqn2$

We put equation (2) into equation (1) to get;

$3s-4(s-55)=77$

We expand the bracket to get;

$3s-4s+220=77$

$3s-4s=77-220$

$-s=-143$

$s=143$

Hence the triangle is 143 inches long.

8 0

3 years ago

What is the domain of the following parabola?

yanalaym [24]

First we have to understand what the domain is. In a nutshell the domain is the set of all x values that are represented in any given graph. In this case we do not have a graph but we have the vertex. The x value is 2, therefore: x ≥ 2.

I hope this helps, Regards.

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4 years ago

Help me please show your work!!

velikii [3]

The cheaper car service would be the second option, $10 upfront + $.05 per mile.

$4+$.70(12 miles)= $12.40
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Hope this helps you! :D

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3 years ago

Find the least positive angle measurement that is coterminal with - 70°

Evgesh-ka [11]

Answer:

292

Step-by-step explanation:

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3 years ago

∠C and ∠D are vertical angles with m∠C=−x+26 and m∠D=2x−10 . What is m∠D ? Enter your answer in the box.

Musya8 [376]

-x+26=2x-10
+x +10 +x +10
36+3x
divde by 3
12=x

m∠D=2(12)-10
=24-10
=14