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3 years ago

which graph represents a line with a slope of -2/3 and a u intercept equal to that of theme u =2/3×-2

Mathematics

1 answer:

Usimov [2.4K]3 years ago

6 0

Answer:

Step-by-step explanation:

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Shawna can paint a fence in 8 hours. Kevin can paint the same fence in 4 hours. How long will it take them working together? Sho

saw5 [17]

Answer: 2.66 hours

Step-by-step explanation:

Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.

Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.

Together in 1 hour they can paint 1/8 + 1/4 = 3/8

Total hours for painting is 3/8 or 2.66 hours

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3 years ago

Read 2 more answers

Find the exact value of cos(theta) for an angle (theta) with tan (theta)= -2/3 and with its terminal side in Quadrant II.

Naya [18.7K]

Answer:

$-\frac{3\sqrt{13}}{13}$ .

Step-by-step explanation:

Since we are in quadrant two, cosine value is negative while sine value is positive.

We are going to use the Pythagorean Identity: $1+\tan^2(\theta)=\sec^2(\theta)$ .

$1+(\frac{-2}{3})^2=\sec^2(\theta)$

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

$\frac{9+4}{9}=\sec^2(\theta)$

$\frac{13}{9}=\sec^2(\theta)$

$\pm \sqrt{\frac{13}{9}}=\sec(\theta)$

$\pm \frac{\sqrt{13}}{3}=\sec(\theta)$

Since cosine and secant are reciprocals then they will have the same sign as along as they both exist.

$\sec(\theta)=-\frac{\sqrt{13}}{3}$

$\cos(\theta)=-\frac{3}{\sqrt{13}}$ .

I don't see this answer as I'm going to rationalize the denominator.

$\cos(\theta)=-\frac{3}{\sqrt{13}} \cdot \frac{\sqrt{13}}{\sqrt{13}}$ .

$\cos(\theta)=-\frac{3\sqrt{13}}{13}$ .

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4 years ago

Read 2 more answers

Which is the equation of a line that has a slope of -2/3

Lesechka [4]

Answer:

The second one

Step-by-step explanation:

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3 years ago

Solve the following:<br>1) x + (-5) = 12

NemiM [27]

What you need to do is add 5 on both side. After you did that you will end up getting x =17 and that’s the answer to this question

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3 years ago

one fish is 4 feet below sea level. Another fish is 3 feet below sea level. write each position as an integer. which integer is

Eva8 [605]

Fish #1 is -4 feet
Fish #2 is -3 feet

Fish #2 is higher than Fish #1

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3 years ago

which graph represents a line with a slope of -2/3 and a u intercept equal to that of theme u =2/3×-2​

which graph represents a line with a slope of -2/3 and a u intercept equal to that of theme u =2/3×-2