3 years ago

Select the correct answer.

Mathematics

1 answer:

Nat2105 [25]3 years ago

7 0

Answer:

cndjxnn

Step-by-step explanation:

vncnfxjdncnnxxjjxnxxnjxxjdnxnxjxj, x

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If sin theta = -1/2 and lies in the third quadrant, what is the cos?

never [62]

Sin angle that equals the 1/2 value is the 30 degree on the 1st Quadrant.

The angle of 30 degree on the 3rd Quadrant is equivalent to (formula and circle in the 1st photo) 180 + 30 = 210°.

So theta = 210° (3rd Quadrant) = 30° (1st Quadrant).

$cos \: 30\degree = \sqrt{3} \div 2$

Now just transfer the cos 30° to the 3rd Quadrant and the signal will be negative (as shown in the 2nd photo attached).

$cos \: 210 \degree = - \sqrt{3} \div 2$

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4 years ago

A rental company charges a flat fee of $200 plus $50 per day. Create a linear function to represent where f(x) is the total cost

VARVARA [1.3K]

Y=50x+200

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4 years ago

Use diagrams of equivalent ratios to show that the ratios 2:3,4:6, and 8:12 are equivalent

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3 years ago

Solve for n. -4(n+5)=8

il63 [147K]

Answer:

Simplify first:

-4n - 20 = 8

Add 20 to both sides:

-4n = 28

Divide by -4:

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3 years ago

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Plz help me find answer. what are the coordinates of slope when y= x/1–x² when dy/dx=1

vova2212 [387]

Step-by-step explanation:

dy/dx

= d/dx [x / (1 - x²)]

= [(1 - x²)(1) - (x)(-2x)] / (1 - x²)²

= (1 + x²) / (1 - x²)².

When dy/dx = 1, (1 + x²) / (1 - x²)² = 1.

=> 1 + x² = 1 - x²

=> 2x² = 0, x = 0.

Also when x = 0, y = (0) / [1 - (0)²] = 0.

Hence the coodinates is (0, 0).

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3 years ago