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djyliett [7]
2 years ago
10

5.8(20-3x)= please this is timed i need help!

Mathematics
1 answer:
maria [59]2 years ago
4 0

Answer:

Step-by-step explanation:

5.8(20−3x)

=(5.8)(20+−3x)

=(5.8)(20)+(5.8)(−3x)

=116−17.4x

=−17.4x+116

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If 2x − 4(x + 1) = −12, evaluate x2 − 1.
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2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
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x=-8/-2
x=4

2) we evalute x²-1
x²-1=4²-1=16-1=15

Answer: 15
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Which set of side lengths can form a triangle?
emmainna [20.7K]

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C:4 cm, 8 cm, 5 cm

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sum of length of any two sides of a triangle will be larger than the third side.

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Calculate the area of the equilateral triangle using the formula for area of a regular polygon, and compare it to Bianca’s answe
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The calculated areas of both are the same instead of using the different formulas that are 43. 5 squared unit.

<h3>What is the area of a regular polygon?</h3>

The area of the polygon is the product of half of the apothem of the triangle and perimeter.

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The side of the triangle is 10 units.

Apothem of an equilateral triangle

s = \frac{\sqrt{3} a}{6}

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The perimeter of the equilateral triangle is equal to the three times the sides.

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Therefore, The calculated areas of both are the same instead of using the different formulas.

Learn more about the apothem;

brainly.com/question/10580427

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Hey there!

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<u></u>

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A3 + 3a2b - 4ab - 11b + 7?
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Hello!

Are you looking for how many "Terms" there are?

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