3 years ago

Solve the equation by completing the square. Round to the nearest hundredth if necessary. x2 + 3x = 24

Mathematics

1 answer:

tigry1 [53]3 years ago

5 0

X = 4.8

Hope this Helps

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What is the result of isolating x^2 in the equation below (x+1)^2+(y-8)^2=9

taurus [48]

Answer:

x² = 8 - (y - 8)² - 2x

x² = 16y - y² - 2x - 56

Step-by-step explanation:

∵ (x + 1)² + (y - 8)² = 9

∵ x² + 2x + 1 = 9 - (y - 8)²

∴ x² = 9 - (y - 8)² - 2x - 1

∴ x² = 8 - (y - 8)² - 2x

OR:

∵ x² = 8 - (y² -16y + 64) - 2x

∴ x² = 8 - y² + 16y - 64 - 2x

∴ x² = 16y - y² - 2x - 56

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4 years ago

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A circular flower bed is m in diameter and has a circular sidewalk around it that is m wide. Find the area of the sidewalk in sq

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Answer:

Step-by-step explanation:

$A=\frac{\pi d^2}{4}\\ \\ A=\frac{\pi}{4}((2m)^2-m^2)\\ \\ 0.785(4m^2-m^2)\\ \\ 0.785(3m^2)\\ \\ A=2.355m^2$

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4 years ago

If f(x)=2x and g(x)=/x, what is the domain of (f o g)(x)? A) x=>0 B) x=0 C)x=<0 D) all real numbers

Aloiza [94]

$f(x)=2x,\ g(x)=\sqrt{x}\\\\(f\circ g)(x)=2\sqrt{x}\\\\The\ domain:\\\\\boxed{x \geq 0}$

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3 years ago

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Y = f(x) = 2^x

Virty [35]

Answer:

The value of f(x) when x=-1 is 0.5

Therefore $f(-1)=0.5$

Step-by-step explanation:

Given that y=f(x)= $2^x$

to find the f(x) when x=-1 :

That is to find f(-1)

Put x=-1 in the given function f(x)= $2^x$

$f(-1)=2^{-1}$

$=\frac{1}{2}$

$=0.5$

Therefore $f(-1)=0.5$

The value of f(x) when x=-1 is 0.5

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4 years ago

414 divided by 9 in long division

joja [24]

Hey! Hope that I can help.

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3 years ago