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2 years ago

5

10.

1 answer:

harina [27]2 years ago

7 0

The answer is D.. :)

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I really need help on these please give me the answers.

vodomira [7]

I believe you should do as much work as you can on each of these problems and only then ask for help. You'll almost always learn more by becoming involved in the thinking and problem solving you encounter here.

|x| + 5 = 13 reduces to |x| = 13, so x could be either -13 or +13.

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3 years ago

Would this be sin, cos, or tan?

Nataly [62]

Answer:

tan

Step-by-step explanation:

its the opposite over adjacent

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3 years ago

Read 2 more answers

Find exact values for sin θ and tan θ if cos θ = -4/9 and tan θ > 0.

julsineya [31]

Answer:

Part 1) $sin(\theta)=-\frac{\sqrt{65}}{9}$

Part 2) $tan(\theta)=\frac{\sqrt{65}}{4}$

Step-by-step explanation:

we have that

The cosine of angle theta is negative and the tangent of angle theta is positive

That means that the sine of angle theta is negative

step 1

Find $sin(\theta)$

we know that

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

we have

$cos(\theta)=-\frac{4}{9}$

substitute

$sin^{2}(\theta) +(-\frac{4}{9})^{2}=1$

$sin^{2}(\theta) +\frac{16}{81}=1$

$sin^{2}(\theta)=1-\frac{16}{81}$

$sin^{2}(\theta)=\frac{65}{81}$

square root both sides

$sin(\theta)=\pm\frac{\sqrt{65}}{9}$

Remember that

In this problem the sine of angle theta is negative

so

$sin(\theta)=-\frac{\sqrt{65}}{9}$

step 2

Find $tan(\theta)$

we know that

$tan(\theta)=\frac{sin(\theta)}{cos(\theta)}$

we have

$sin(\theta)=-\frac{\sqrt{65}}{9}$

$cos(\theta)=-\frac{4}{9}$

substitute the given values

$tan(\theta)=-\frac{\sqrt{65}}{9}:-\frac{4}{9}=\frac{\sqrt{65}}{4}$

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3 years ago

Write 6 1/4% as a decimal.

IceJOKER [234]

The decimal is 0.0625

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3 years ago

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During an evening out, Dean paid a cab driver $20. He then spent $25 on dinner and half of his remaining money on a painting. He

rodikova [14]

20+25 divided by 2 +23.75 - 42.15 = 4.100...

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3 years ago