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2 years ago

What will be the coordinates of N after a 90 degree counterclockwise around the origin

Mathematics

1 answer:

Virty [35]2 years ago

8 0

Answer:

The original point (x , y) —> the point rotated (-y , x)

Step-by-step explanation:

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hammer [34]

Answer:

They are supplementary angles.

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2 years ago

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

alexira [117]

Answer:

Option B

Step-by-step explanation:

Given quadratic equation is,

12a² + 9a + 7 = 0

By comparing this equation with standard quadratic equation,

hx² + kx + c = 0

h = 12, k = 9 and c = 7

By using quadratic formula,

a = $\frac{-k\pm\sqrt{k^2-4hc}}{2h}$

= $\frac{-9\pm\sqrt{9^2-4(12)(7)}}{2(12)}$

= $\frac{-9\pm\sqrt{81-336}}{2(12)}$

= $\frac{-9\pm\sqrt{-255}}{24}$

= $\frac{-9\pm i\sqrt{255}}{24}$

a = $\frac{-9+ i\sqrt{255}}{24},\frac{-9- i\sqrt{255}}{24}$

Therefore, Option B will be the correct option.

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2 years ago

Please help <br>Find the area of a circle with a diameter of 30 ft

olga nikolaevna [1]

Answer:

$706.85 {cm}^{2}$

Step-by-step explanation:

$area =\pi {r}^{2} \\ = \pi \times 15 \times 15 \\ = 706.85 {cm}^{2}$

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The hulk ran down wall street towards east to catch the villain. The villain was 3000 meters and it took the hulk 30 seconds to

anyanavicka [17]

Answer:

$\large \boxed{\text{100 m/s east}}$

Step-by-step explanation:

Velocity has both magnitude and direction.

The magnitude is the speed.

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