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quester [9]
2 years ago
10

PLEASE HELPPP ILL GIVE BRAINLIESTTTT

Mathematics
2 answers:
mafiozo [28]2 years ago
5 0

Answer:

8

Step-by-step explanation:

The interior angles of a triangle always add up to 180°.

As QE=ED=QD

so, ∠Q=∠E=∠D=180°/3=60°

As, ∠D=5x+20

60=5x+20

5x=40

x=8

Hope, this helps you.

kati45 [8]2 years ago
5 0

Answer:

x= 8

Step-by-step explanation:

QE=ED=QD

SO;

Sum of angles =180

each angle = 60

5x+20= 60 —> 5x =60-20 —> 5x = 40

x = 40/5 —> x = 8

I hope I helped you^_^

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4 0
3 years ago
The area of a rectangular piece of cardboard is represented by
Liula [17]

This question is solved applying the formula of the area of the rectangle, and finding it's width. To do this, we solve a quadratic equation, and we get that the cardboard has a width of 1.5 feet.

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The area of rectangle of length l and width w is given by:

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From this, we get that:

l = 2w + 3, A = 9

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

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Another similar problem can be found at brainly.com/question/16995958

5 0
2 years ago
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