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3 years ago

Please help i dont understand

Mathematics

1 answer:

harkovskaia [24]3 years ago

7 0

Answer:

y=x is the correct answer

Explanation:

A linear equation is an equation between two variables that gives a straight line when plotted on a graph.

Why the other ones are incorrect:

y=√x gives a radical function graph

y=x^3 gives a cubic graph

y=x^2 gives a parabola

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Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to two decimal places

Montano1993 [528]

The solution of the given equation is :

cosθ = 1/2 when θ = π/3 + 2kπ or 5π/3 + 2kπ

cosθ = -1 when θ = π + 2kπ

Since cos2θ + sin2θ = 1, sin2θ = 1 - cos2θ

So, the given equation is equivalent to 2(1 - cos2θ) - cosθ = 1

-2cos2θ - cosθ + 1 = 0

2cos2θ + cosθ - 1 = 0 (multiplying the entire equation by -1)

(2cosθ - 1)(cosθ + 1) = 0 (taking common)

cosθ = 1/2 or cosθ = -1 (on equating it to zero)

cosθ = 1/2 when θ = π/3 + 2kπ or 5π/3 + 2kπ

cosθ = -1 when θ = π + 2kπ

For more information about trigonometric ratios, visit

brainly.com/question/24496175

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1 year ago

Any answers? No need for an explanation if you want to sure, the answer would be appreciated!

Simora [160]

Yes because 9+4 = 13 and if you plug in the y and x it turns out true

6 0

2 years ago

HELP. EASY MATH. 14POINTS

ira [324]

Do Pythagorean theorem. If you don't know what that is...

Do A squared plus B squared Equals C squared and you will get your answer for the shape. Then calculate the area

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3 years ago

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18% of what number is 46.8?

Rasek [7]

The answer is 260 have a good day.
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2 years ago

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You are giving 24 linear feet of fencing all 3 feet tall you wish to make the largest rectangular enclosure possible to maximize

earnstyle [38]

Answer:

The largest area enclosed is A = xy = 6 feet $\times$ 6 feet = 36 $feet^{2}$

Step-by-step explanation:

i) The perimeter of the area is 2 $\times$ (x + y) =24 ∴ x + y = 12 ∴ y = 12 - x

ii) The area of rectangle enclosed A = xy ⇒ A = x ( 12 - x) = 12x - $x^{2}$

iii) differentiating both sides of the equation in ii) we get

$\dfrac{dA}{dx} = 12 - 2x = 0$ ⇒ x = 6 feet

iv) Differentiating both sides of equation in iii) we get $\frac{d^{2}A}{dx^{2} }$ = -2

Therefore the area enclosed is maximum as the double derivative is negative

v) therefore for largest area enclosed x = 6 feet and y = 12 - 6 = 6 feet

vi) therefore the largest area enclosed is

A = xy = 6 feet $\times$ 6 feet = 36 $feet^{2}$

7 0

3 years ago