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3 years ago

15

Find all the real square roots of

c{-9}{16} " alt=" \frac{-9}{16} " align="absmiddle" class="latex-formula">

1 answer:

svet-max [94.6K]3 years ago

6 0

Since $-\dfrac9{16}$ is negative, it doesn't have any real roots.

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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.

Find the cosine:

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

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3 years ago

What is a solution to the equation 1/8=2/5•x

sleet_krkn [62]

The answer is: x=5/16

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What shape is created by the rotation and what is the

zlopas [31]

Answer:

<u>Option D: A cylinder with a circumference of about 50 units</u>

Step-by-step explanation:

The rest of the question is the attached figure.

The square shown has a perimeter of 32 units. The square is rotated about line k. What shape is created by the rotation and what is the approximate circumference of the base? Circumference of a circle: C = 2πr

===================================================

Given: the perimeter of the square = 32

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So, the side length of square = 32/4 = 8 units

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Where, r is the radius of the circle.

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∴ C = 16π = 16 * 3.14

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<u>So, the answer option is D.</u>

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SOVA2 [1]

If n is ten then the expression would change to
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