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m_a_m_a [10]
2 years ago
10

6. (07.02 MC)

Mathematics
1 answer:
guapka [62]2 years ago
7 0

Given:

A right angled triangle in the figure.

To find:

The value of x.

Solution:

We know that, in a right angled triangle,

\tan \theta =\dfrac{Opposite}{Adjacent}

For the given triangle,

\tan (x^\circ) =\dfrac{8}{15}

x^\circ =\tan^{-1} \dfrac{8}{15}

x^\circ =28.072487^\circ

x^\circ \approx 28.07^\circ

Therefore, the value of angle x is 28.07°.

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<h2>Half Life</h2>

The half life period is the time in which only half of the given population remains. It can be represented through this equation:

f(t)=a\times(1/2)^{\frac{t}{h}}

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<h2>Solving the Question</h2>

We're given:

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For most questions like this, we would have to plug these values into the equation mentioned above. However, this question asks for the time elapsed after 3 half-lives.

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<h2>Answer</h2>

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Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?
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An expression which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula is: expression A. Therefore, the correct answer option is A.

<h3>What is a quadratic equation?</h3>

A quadratic equation can be defined as a mathematical expression (equation) that can be used to define and represent the relationship that exists between two or more variable on a graph. In Mathematics, the standard form of a quadratic equation is given by;

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Read more on quadratic equation here: brainly.com/question/4053652

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