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3 years ago

Ill mark btainlist pllssss helpp

Mathematics

1 answer:

Hatshy [7]3 years ago

3 0

Answer:

1cm-----80000m

1cm-----8000000cm

1cm×3.275-----80km×3.275

3.275cm

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suppose the income tax rate is 4% determine the amount of money remaining after paying income tax on an income of $20,000

Romashka [77]

Answer:

$19200

Step-by-step explanation:

20,000*0.96=19200

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3 years ago

In the complex number system, which of the following is equal to

pogonyaev

Answer:

C) $122+154i$

Step-by-step explanation:

$(14-2i)(7+12i)\\\\(14)(7)+(14)(12i)+(-2i)(7)+(-2i)(12i)\\\\98+168i-14i-24i^2\\\\98+154i-24(-1)\\\\98+154i+24\\\\122+154i$

Therefore, C is correct. Recall that $i^2=-1$

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2 years ago

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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:

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

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

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

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

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

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

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

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

Help

Korvikt [17]

Answer: No, it fails the vertical line test.

Step-by-step explanation:

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2 years ago

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A stone is dropped from the top of a tower. The height h in meters from where the stone is dropped to the ground is given by the

CaHeK987 [17]

Wag umasa sa brainly

Step-by-step explanation:

Labot

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2 years ago