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Maru [420]
3 years ago
14

Simplify 3a(a^2-3a+4)-4(3a^3-2a^2)

Mathematics
1 answer:
bogdanovich [222]3 years ago
4 0

Answer:

<h2>−9a³ − a² + 12a</h2>

Step-by-step explanation:

3a(a²-3a+4)-4(3a³-2a²) = 3a³ − 9a² + 12a − 12a³ + 8a²

                                     = (3a³ − 12a³) + (− 9a² + 8a²) + 12a  

                                     = −9a³ − a² + 12a

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John's Mathematics exam mark this year is increased by 5% to 84. Find his Mathematics exam mark
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Answer:

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Step-by-step explanation:

Let's call the past exam mark m,

m*105%=84

m*105/100=84

m=84/(105/100)

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Hope this helps!

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Simplify. (-2)-3 -8 - 8 user: simplify. 6x-2
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How many miles did Brian run?
VashaNatasha [74]

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Here is an equilateral triangle. The length of each side is units. A height is drawn. In an equilateral triangle, a line drawn f
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1. Height of the equilateral triangle is: √3 units

2. Area of the equilateral triangle = √3 units²

3. Area = √3/4 x², when each side is x.

<h3>What is an Equilateral Triangle?</h3>

A triangle that has all its three sides equal in length, is referred to as an equilateral triangle.

1. Given the each side measures 2 units, and h is the height, applying the Pythagorean theorem, we would have:

h = √(2² - 1²)

h = √(4 - 1)

h = √3

2. Area of the equilateral triangle = 1/2bh = 1/2(2)(√3)

Area of the equilateral triangle = √3 units²

3. If x is the side length of the equilateral triangle, we would have:

height (h) = √[x² - (x/2)²] = √[x² - x²/4] = √(3x²/4) = √3/2x

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Learn more about equilateral triangle on:

brainly.com/question/15294703

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