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3 years ago

Which fraction is equivalent to the fraction shaded?

Mathematics

2 answers:

Law Incorporation [45]3 years ago

6 0

The fractions that is equivalent is D. 6/15.

The fraction shaded is 2/5 and 6/15 reduced = 2/5

6/3 = 2

-------

15/3 = 5

viktelen [127]3 years ago

4 0

The answer is D

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Need reasons answer for this please!

Ugo [173]

Step-by-step explanation:

1.Given .

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2 years ago

Which proportion is correct?

Sonja [21]

Answer:

Step-by-step explanation:

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2 years ago

Which of the following is not equal to sin⁡(-230°)?

xenn [34]

From trigonometry we know that:

if $sin(\theta)=sin(\alpha)$

then, $\theta=n\pi+(-1)^n\alpha$ (where $n$ is an integer)

This can be rewritten in degrees as:

$\theta=n(180^{\circ})+(-1)^n\alpha$ .............(Equation 1)

Now, in our case, $\alpha=-230^{\circ}$

Therefore, (Equation 1) can be written as:

$\theta=n(180^{\circ})+(-1)^n(-230^{\circ})$ ..........(Equation 2)

Now, to find the correct options all that we have to do is replace n by relevant integers and find the values of $\theta$ that match.

For n=2, (Equation 2) gives us: $\theta=2\times 180^{\circ}+(-1)^2(-230^{\circ})=360^{\circ}-230^{\circ}=130^{\circ}$ .

Thus, $sin(230^{\circ})=sin(130^{\circ})$

Now, we know that: $-sin(-50^{\circ})=sin(50^{\circ})$

Let n=-1, then:

$\theta=(-1)\times 180^{\circ}+(-1)^{-1}(-230^{\circ})=-180^{\circ}+230^{\circ}=50^{\circ}$

Thus, $sin(-230^{\circ})=-sin(-50^{\circ})$

Likewise, $sin(-230^{\circ})=sin(50^{\circ})$

Only the last option $sin(-50^{\circ})$ will never match $sin(-230^{\circ})$ because no integral value of $n$ will ever give $\theta=-50^{\circ}$

Thus the last option is the correct option.

3 0

2 years ago

Read 2 more answers

What is the simplified form of the following expression? Assume x > 0.

Lady bird [3.3K]

Answer:

fourth root of 24 x cubed/16x to the power four

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2 years ago

classify the pair of angles. (supplementary, adjacent, vertical, or complementary) then find the value of x.

earnstyle [38]

Answer:

Supplementary angles; 148°

Step-by-step explanation:

180° - 32° = 148° (supplementary angles)

8 0

2 years ago