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3 years ago

10

What is measure WR and RT

1 answer:

iren [92.7K]3 years ago

8 0

$\frac{2x + 6}{x + 6} = \frac{10}{8} = \frac{5}{4} \\ 8x + 24 = 5x + 30 \\ 3x = 6 > > > x = 2$

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What are three ratios that are equivalent to 8 : 20 8:20

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Answer:

4:10 16:40 and 32:80

Step-by-step explanation:

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3 years ago

Through any 1 point how many lines can be drawn parallel to another straight line?

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Infinite straight lines could be drawn from a single point in any direction.

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3 years ago

Find sec 2Theta in exact value

forsale [732]

Answer:

$sec(2\theta)=-\frac{5}{4}$

Step-by-step explanation:

we know that

step 1

Find $cos(\theta)$

we know that

$tan^2(\theta)+1=sec^2(\theta)$

we have

$tan(\theta)=3$

substitute

$3^2+1=sec^2(\theta)$

$sec^2(\theta)=10$

$sec(\theta)=\pm\sqrt{10}$

Remember that

Angle theta lie in Quadrant I

so

$sec(\theta)$ is positive

$sec(\theta)=\sqrt{10}$

Remember that

$sec(\theta)=\frac{1}{cos(\theta)}$

therefore

$cos(\theta)=\frac{1}{\sqrt{10}}$

step 2

Find $sin(\theta)$

we know that

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

$sin(\theta)=tan(\theta)cos(\theta)$

we have

$cos(\theta)=\frac{1}{\sqrt{10}}$

$tan(\theta)=3$

substitute

$sin(\theta)=(3)(\frac{1}{\sqrt{10}})$

$sin(\theta)=\frac{3}{\sqrt{10}}$

step 3

Find $cos(2\theta)$

we know that

$cos(2\theta)=2cos^2(\theta)-1$

we have

$cos(\theta)=\frac{1}{\sqrt{10}}$

substitute

$cos(2\theta)=2(\frac{1}{\sqrt{10}})^2-1$

$cos(2\theta)=\frac{1}{5}-1$

$cos(2\theta)=-\frac{4}{5}$

Remember that

$sec(2\theta)=\frac{1}{cos(2\theta)}$

therefore

$sec(2\theta)=-\frac{5}{4}$

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3 years ago

Andrea's dad ran 12 miles and 75 minutes on a treadmill if he runs at that rate how far could he run in 30 minutes

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3 years ago

a coin is tossed 80 times, it lands on heads 30 times and on tails 50 times. which three statements (shown below) are correct wh

lakkis [162]

Answer:

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Step-by-step explanation:

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3 years ago