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3 years ago

Solve by using the quadratic formula x^2-4x=-2

Mathematics

1 answer:

atroni [7]3 years ago

6 0

Answer:

x=2+ $\sqrt[]{2}$ or x= 2- $\sqrt[]{2}\\$

Step-by-step explanation:

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Solve the following using completing the square method :

olasank [31]

Answer:

1. x = {1.5, 0.2}

2. x = 1

Step-by-step explanation:

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3 years ago

30 points for anyone that can help please?

statuscvo [17]

Answer:

A) 1.5

B) x^2-23x+42 = (x-2)(x-21)

C) x=2, x=21

Step-by-step explanation:

a) 15 -2x / 3 = 4

15-2x = 12 (Times by three on both sides)

-2x = -3

x = -3/-2 = 3/2 = 1.5

b) x^2-23x+42

x^2-23x+42 = (x-2)(x-21)

c) x^2 -23x +42 = 0

x=2, x=21

(x-2) = 0 ⇒ x = 2

(x-21) = 0 ⇒ x = 21

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3 years ago

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Choose the required figure. A right triangle circumscribed about a circle:

Aloiza [94]

Answer with explanation:

If you want to Draw a Right Triangle Circumscribed about a circle, Draw a Right Triangle by taking Pythagorean Triplet.

Now, Draw Perpendicular Bisector of any of two sides.The Point where the two bisectors meet is center of the circle.

To find the center we have used the theorem, line from the mid point of the chord passes through the center of the circle.

From the center , that is at the point where the perpendicular bisectors meet,draw a circle Passing through three vertices of Right Triangle.

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3 years ago

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Angles θ and Φ are complementary, and θ = Find the measure of Φ.

vagabundo [1.1K]

It is a tongue twister

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3 years ago

Simplify 1- cos^2 Θ / cos^2 Θ Answers sin2 θ cos2 θ tan2 θ 1

Tems11 [23]

Answer:

Trigonometric identities

$\large \begin{aligned}\cos^2 \theta + \sin^2 \theta & = 1\\\implies \quad \quad \sin^2 \theta & = 1 - \cos^2 \theta\\\\\tan \theta=\dfrac{\sin \theta}{\cos \theta} \end{aligned}$

Therefore, using the identities, the given expression can be simplified as follows:

$\large\begin{aligned}\implies \dfrac{1- \cos^2 \theta}{\cos^2 \theta} & = \dfrac{\sin^2 \theta}{\cos^2 \theta}\\\\& = \tan^2 \theta\end{aligned}$

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2 years ago

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