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3 years ago

Y=4x^2-4x-8 using the quadratic formula

Mathematics

1 answer:

densk [106]3 years ago

8 0

Answer:

4(x+1)(x-2)

Step-by-step explanation:

factor the expression: 4x^2-4x-8

4(x^2-x-2)

write as a difference: 4(x^2+x-2x-2)

factor out x: 4(x(x+1)-2(x+1)),

then factor out x+1:

4(x+1)(x-2)

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What is the sum of 4.9 × 102 and 6.8 × 103? 1.17 × 103

Tju [1.3M]

4.9 * 102 = 499.8
6.8 * 103 = 700.4
1.71 * 103 = 120.51

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3 years ago

Read 2 more answers

Adding and Subtracting Decimals

Alex17521 [72]

Answer: 14.353 or 18.647

Step-by-step explanation:

Hi.

Subtracting:

16.5 - 2.147 = 14.353

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2 years ago

According to the general equation for conditional probability, if PLAN B)

Vinvika [58]

Answer:

A.4/7

Step-by-step explanation:

P(A/B) =P(AnB) /P(B)

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3 years ago

As you are walking down a path, you see a sign telling the path has a 2% grade (ie., a rise of 2 metres for a horizontal change

Leni [432]

Answer:

Option (A)

Step-by-step explanation:

It has been given in this question that sign telling path has a 2% grade.

2% grade means a rise of 2 meters for a horizontal change of 100 m (As given in the figure attached).

All the trigonometric ratios for the angle θ between the path and the horizontal are,

Sinθ = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

Cosθ = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

tanθ = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

Since measures of the opposite side and adjacent sides are given

Therefore, tangent ratio will be applied to get the measure of the angle,

tanθ = $\frac{2}{100}$

θ = $\text{tan}^{-1}(\frac{2}{100})$

Option (A) will be the answer.

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3 years ago

I really need help please

Lana71 [14]

Oh um... well let's see... okay I do NOT know this. SO sorry. Hope you get an answer soon.

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3 years ago