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2 years ago

Last week, Lisa drove 12 meters to visit her uncle. Is it meters, centimeters, kilometers, or millimeters?

Mathematics

1 answer:

Vitek1552 [10]2 years ago

7 0

Answer:

meters

Step-by-step explanation:

judging by the fact that it says meters i'd say that's the answer. hope this helps :)

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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

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

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

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

3 0

3 years ago

Solve for x.<br> 4(x + 3) = x +42<br> x = [?]

laila [671]

Answer: x=10

Step-by-step explanation:

$4(x+3)=x+42\\4x+12=x+42\\4x-x=42-12\\3x=30\\x=10$

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2 years ago

What is the author's primary purpose in writing this

Sauron [17]

Answer:

he worked hard and hus purpose is to teach people how to learn I guess he wants the reader to know how hard time they spended his secondary purpose is to teach the value of time to people.....

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2 years ago

BC = x + 14, AB = x + 10, AC = 22

irinina [24]

$ab = x + 10 \\ bc = x + 14 \\ ac = 22 \\ (x + 10) + (x + 14) = 22 \\ x + x + 10 + 14 = 22 \\ 2x + 24 = 22 \\ 2x = 22 - 24 \\ 2x = - 2 \\ x = \frac{ -2}{2} \\ x = - 1$

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2 years ago

HURRY PLEASE!! I WILL GIVE BRAINLIEST

user100 [1]

Answer:

1/64

Step-by-step explanation:

1/64=(1/8)^2

1/64=(1/4)^3

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2 years ago

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