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3 years ago

Rationalize the denominator of the fraction and enter the new denominator below. 8/2-√12

Mathematics

1 answer:

Andrei [34K]3 years ago

8 0

8/(2-√ 12) Both sides multiplied by (2+√ 12)

16+8√ 12/4-12

-(16+8√ 12)/8

The new denominator is 8 and the fraction has a negative sign

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Answer:

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a $x^{2}$ - bx + c

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$(\frac{-30}{2}) ^{2}$

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225

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2 years ago

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3 years ago

Find the value of X. Please answer.

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Answer:

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Step-by-step explanation:

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4 0

4 years ago

Need help i dont know what I am doing

aev [14]

Answer:

answer below:)

Step-by-step explanation:

Basically, start off by simplifying each pair of numbers.

The first one: $2^{2}$ x 5 = 4 x 5 = 20

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Now from least to greatest, so that would be 4, 11, 20 or in this case it would then be $8^{2}$ -60, $11^{1}$ , $2^{2}$ x 5

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5 0

3 years ago

The equation h(t) = 1.2 + 40t – 5t2 models the height, in meters of a ball t

Marina CMI [18]

Answer:

Step-by-step explanation:

To determine the time when the height is 40 meters above the ground, we would substitute 40 for h in the given equation. It becomes

1.2 + 4t0t - 5t² = 40

5t² - 40t + 40 - 1.2 = 0

5t² - 40t + 38.8 = 0

The general formula for solving quadratic equations is expressed as

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 5

b = - 40

c = 38.8

Therefore,

t = [- - 40 ± √(- 40² - 4 × 5 × 38.8)]/2 × 5

t = [40 ± √(1600 - 776)]/10

t = [40 ± √824]/10

t = (40 + 28.71)/10 or x = (40 - 28.71)/10

t = 6.871 seconds or t = 1.129 seconds

3 0

3 years ago