Write the quadratic equation in standard form -8x+3x^2=-18

Mathematics

1 answer:

stepladder [879]2 years ago

6 0

X = ± √6 = ± 2.4495 because i know it

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For each interval , decide if the average rate change is positive or negative

Talja [164]

Answer:

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Step-by-step explanation:

8 0

2 years ago

How would I make an equation into an inverse of itself?

gavmur [86]

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3^-1 = 1/3
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5 0

3 years ago

Please help it due asap Helppppppp

Leno4ka [110]

Answer:

x = 30°

2x = 60°

3x = 90°

Step-by-step explanation:

GBF = CBD (opposite angle)

; 2x+x+3x = 180° (Size of straight angle)

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x = 180÷6

x = 30°

substitution x in 2x ; 2×30 = 60°

substitution x in 3x ; 3×30 = 90°

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4 0

3 years ago

. Shanice is making a garden. The area of the garden is 24 ft2. Use the following shape and information to find the base (6−4) a

crimeas [40]

Answer:

The base and height of the garden are 4.60 ft and 5.60 ft.

Step-by-step explanation:

The area of the garden is, A = 24 ft².

The base height of the garden are:

base (b) = 6x - 4

height (h) = x + 3

Compute the value of x as follows:

$A=\frac{1}{2}\times b \times h\\\\24=\frac{1}{2}\times (6x-4) \times (x+3)\\\\48=6x^{2}+18x-4x-12\\\\6x^{2}+14x-60=0\\\\3x^{2}+7x-30=0\\$

The last equation is a quadratic equation.

Compute the roots of the quadratic equation as follows:

$x = \frac{ -b \pm \sqrt{b^2 - 4ac}}{ 2a }\\x = \frac{ -14 \pm \sqrt{14^2 - 4(3)(-30)}}{ 2(3) }\\x = \frac{ -14 \pm \sqrt{556}}{ 6 }\\x = \frac{ -14 }{ 6 } \pm \frac{2\sqrt{139}\, }{ 6 }\\x = -\frac{ 7}{ 3 } \pm \frac{ \sqrt{139}\, }{ 3 }\\x = 1.59661\\x\approx 1.60$