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Anarel [89]
3 years ago
15

Check my answer? The two triangles are similar. What is the value of x? 5.

Mathematics
1 answer:
Nikolay [14]3 years ago
4 0
20/28 = 3x / (4x + 2)

84x = 20(4x + 2)
84x - 80x =  40
4x = 40 
x = 10

so the 2  lines are equal to  30 and  42
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15 points+brainliest!! please help asap, this is due tonight please!!
Masteriza [31]

Answer:

x=\sqrt{13}

Step-by-step explanation:

Base of the isosceles triangle = 4

Perpendicular of the triangle = 3

In an isosceles triangle , a perpendicular bisects a base equally. So, here the isosceles triangle consist of 2 right angled triangles.

In that right angled triangles,

Base = 4/2 = 2 (∵ A perpendicular divides a base into 2 equal parts. )

Perpendicular = 3

Hypotenuse = x

So , according to Pythagorean Theorem ,

Hypotenuse = \sqrt{Base^2 + Perpendicular^2}

Using all the values above into the formula gives :-

x =\sqrt{2^2 + 3^2} = \sqrt{4+9} =\sqrt{13}

3 0
3 years ago
Consider the following figure:
motikmotik

Answer:

angle <B = 76

Step-by-step explanation:

The measure of an exterior angle is equal to sum of two interior angles that is not adjacent to the exterior angle.

We can write the following equation with this information to find the value of angle <B

<B + 71 = 147 subtract 71 from both sides

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5 0
2 years ago
What is the area of this trapezoid?
Sonbull [250]
Find the area of the square first
Area = Length x Width
Area = 12 x 9
Area = 108

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Since there is 2 triangles multiply by 2
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Now add
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126 is your area
8 0
2 years ago
Read 2 more answers
Which transformation will always map a parallelogram onto itself? A. a 90° rotation about its center B. a reflection across one
Katen [24]

Answer:

C. a 180° rotation about its center.

6 0
3 years ago
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inna [77]

Answer:

5

Step-by-step explanation:

Replace 20 instead of m

20/4=5

5 0
3 years ago
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