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3 years ago

Solve –2x2 – 16x – 44 = 0 answer please using quadtratic equation ...?

1 answer:

5 0

The quadratic formula is one way to obtain the solution of the quadratic equation. It is expressed as:

x = (-b +/- √b² - 4ac ) / 2a

where, for this problem, a = -2, b = -16 and c = -44.

We solve as follows:

x = (-b +/- √b² - 4ac ) / 2a
x = (-(-16) +/- √(-16)² - 4(-2)(-44) ) / 2(-2)
x = (16 +/- √256 - 352 ) / -4
x = (16 +/- √-96 ) / -4
x = -(16 +/- 4i√6 ) / 4

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How do you solve the equation 3x = 9 by multiplying 3 to both sides

notka56 [123]

Whenever you see x next to a 3, and it says that it equals 9, you know that 3•3=9.

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2 years ago

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What is the true solution to the equation below? 2 in e in2×-in e in 10×= in 30 A x=30 B x=75 C x=150 D x=300

hodyreva [135]

Answer:

Option B.

Step-by-step explanation:

Let as consider the given equation:

$2\ln e^{\ln 2x}-\ln e^{\ln 10x}=\ln 30$

It can be written as

$2(\ln 2x)-(\ln 10x)=\ln 30$ $[\because \ln e^a=a]$

$\ln (2x)^2-(\ln 10x)=\ln 30$ $[\because \ln a^b=b\ln a]$

$\ln \dfrac{4x^2}{10x}=\ln 30$ $[\because \ln \dfrac{a}{b}=\ln a-\ln b]$

$\ln \dfrac{2x}{5}=\ln 30$

On comparing both sides, we get

$\dfrac{2x}{5}=30$

Multiply both sides by 5.

$2x=150$

Divide both sides by 2.

$x=75$

Therefore, the correct option is B.

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3 years ago

How many triangles can be constructed with angles measuring 110°, 50°, and 20°?

lutik1710 [3]

The answer would be B) more than one hope this helped you!

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3 years ago

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Solve for a A= (a+b) H 2

Nastasia [14]

Answer:

Step-by-step explanation:

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3 years ago

Someone please help me !!!

djverab [1.8K]

Answer:

$a.\ \ \ A=684\ m^2$