2 years ago

Which of the following statements is correct about ?

Mathematics

2 answers:

aliina [53]2 years ago

6 0

B is the best answer

Nookie1986 [14]2 years ago

5 0

b is an <span> irrational number between 9 and 10</span>

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torisob [31]

<h3>Answer:y and z</h3>

Step-by-step explanation:

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3 years ago

If you have a distribution of 50 scores, and you want 5 intervals, what should be the size of your class interval?

ruslelena [56]

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3 years ago

given that sin theta= 1/4, 0 is less than theta but less than pi/2, what is the exact value of cos theta

lapo4ka [179]

Answer:

$\cos{\theta} = \frac{\sqrt{15}}{4}$

Step-by-step explanation:

For any angle $\theta$ , we have that:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

Quadrant:

$0 \leq \theta \leq \frac{\pi}{2}$ means that $\theta$ is in the first quadrant. This means that both the sine and the cosine have positive values.

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$(\frac{1}{4})^{2} + (\cos{\theta})^{2} = 1$

$\frac{1}{16} + (\cos{\theta})^{2} = 1$

$(\cos{\theta})^{2} = 1 - \frac{1}{16}$

$(\cos{\theta})^{2} = \frac{16-1}{16}$

$(\cos{\theta})^{2} = \frac{15}{16}$

$\cos{\theta} = \pm \sqrt{\frac{15}{16}}$

Since the angle is in the first quadrant, the cosine is positive.

$\cos{\theta} = \frac{\sqrt{15}}{4}$

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3 years ago

Write the equation of the linear relationship in slope-intercept form, using decimals as needed.

Mazyrski [523]

Answer:

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3 years ago

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aleksandrvk [35]

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3 years ago