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3 years ago

Ok. The point (3,0) lies on a circle with the center at the origin. What is the area of the circle?

1 answer:

7 0

If a point on the circle is (3,0) then the radius is 3 units.
The area of the circle is $\pi *r^{2}$
$\pi *9$
about 28.27 units

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Decide whether the triangle is a right triangle.

Harrizon [31]

Answer:

no it is not a right angle triangle

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3 years ago

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In which quadrant does the point (6,5) lie

il63 [147K]

Answer:

quadrant 1

Step-by-step explanation:

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2 years ago

En una empresa trabajan 60 personas. Usan gafas el 16% de los hombres y el 20% de las mujeres. Si el número total de personas qu

DIA [1.3K]

Pregunta completa:

En una empresa trabajan 60 personas. Usan gafas el 16% de los hombres y el 20% de las mujeres. Si el numero total de personas que usan gafas es 11. ¿Cuantos hombres y mujeres hay en la empresa?

Responder:

Hombres = 25

Mujeres = 35

Explicación paso a paso:

Dado lo siguiente:

Número de personas que trabajan en la empresa = 60

Porcentaje de hombres que usan anteojos = 16%

Porcentaje de mujeres que usan anteojos = 20%

Número total de personas que usan anteojos = 11

Suponga, Número de hombres en la empresa = m

Número de mujeres = número total - número de hombres = 60 - m

Por lo tanto,

16% de los hombres = 0,16 m

20% de mujeres = 0,2 (60 - m) = 12 - 0,2 m

Por lo tanto,

0,16 m + 12 - 0,2 m = 11

- 0,04 m = 11 - 12

-0,04 m = - 1

m = 1 / 0.04 = 25

Por tanto, Número de hombres en la empresa = m = 25

Número de mujeres en la empresa = (60 - m) = (60 - 25) = 35 mujeres

4 0

3 years ago

The perimeter of a square and an equilateral triangle add up to 77 cm. Both figures have

ad-work [718]

Length of each side = 11 cm

Solution:

Let a be the side of the square.

Side length of square = Side length of equilateral triangle

Therefore, side length of equilateral triangle = a

Perimeter of the square = Number of sides × side

= 4 × a

Perimeter of the square = 4a

Perimeter of the equilateral triangle = Number of sides × side

= 3 × a

Perimeter of the equilateral triangle = 3a

Sum of the perimeter of a square and equilateral triangle = 77 cm

⇒ 4a + 3a = 77

⇒ 7a = 77

Divide by 7 on both sides of the equation, we get

⇒ a = 11 cm

Length of each side = 11 cm.

5 0

3 years ago

Please help? Will make you the Brainliest!

Allushta [10]

Answer:

D. 19/2 D.-4/ $\sqrt{15}$ D.cos^2x look at explanation for last one

Step-by-step explanation:

1. Find the value of sec if cos delta = 2/19

because sec is basically 1/cos, and since it's Quad I there's nothing weird, you can just flip the fraction

therefore it's D. 19/2

2. Find the value of csc given cos delta = -1/4 and triangle is in third Quad

so cosine is adj over hypo: since the hypo can't ever be negative, the triangle must have a = -1 and c =4. to find bc use the c^2 = a^2 + b^2 to solve for b^2, and since it's third quad, b is negative, so b = - $\sqrt{15}$ 2. NOw that you know all three sides, finding csc is ez. So csc is hypo over opposite bc its opposite of sine, so therefore csc delta = $-4/\sqrt{15}$

3. simplify sin^2qcot^2

ok, so if cot is opposite of tan, and tan is sine over cos, cot must be cos over sine :D! SO cot^2 = $\frac{cos^2x }{sin^{2}x}$ . multiply that by sin^2 and the sines will cancel, leaving you with just cos^2x! sorry, I used x insead of q out of habit... oops!

4. determine the quad if sine delta = -1/4

sine is opposite over hypo, and as mentioned before, hypo can't equal to negative, so the opposite side must be negative. therefore, the triangle must lie in quad III or quad IV

ahem, these are your answers, idk why is it all D lol, I hope this helped. sorry this was so long!

8 0

3 years ago

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