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3 years ago

What is the radius of a circle if its center is (-3,-2) and one point on the circle is (5,-2)?

Mathematics

1 answer:

Len [333]3 years ago

5 0

Answer:

Step-by-step explanation:

The distance from the centre to a point on the circle is the radius.

Calculate radius r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 3, - 2) and (x₂, y₂ ) = (5, - 2)

r = $\sqrt{(5+3)^2+(-2+2)^2}$

= $\sqrt{8^2+0^2}$

= $\sqrt{64}$ = 8 → A

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If 24 is 60% of a value, what is the total value

yuradex [85]

The answer would be 40.
to answer this, u can use the is over of equals to % over hundred.
is %
__ = ___
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the is would be 24 and the percent would be 60.
so,
24 60
__ = ___
x 100
to answer this u would cross multiply.
24x100=2400
60x X=60x
then, divide
6\0x 2400
__\___ = _____
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2400 divided by 60 is 40.
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3 years ago

Un estudiante debe recorrer dos tercios de kilómetro para llegar al colegio, si avanza medio kilómetro en bus y lo demás a pie ¿

Murljashka [212]

Answer:

Al estudiante le falta caminar $\frac{1}{3}$ de kilómetro.

Step-by-step explanation:

Un estudiante debe recorrer dos tercios de kilómetro para llegar al colegio. Dos tercios equivale a la fracción $\frac{2}{3}$ .

El estudiante avanza medio kilómetro en bus. Un medio equivale a la fracción $\frac{1}{2}$ , por lo tanto un medio es la mitad de una cantidad. Para calcular la distancia recorrida en bus se realiza la siguiente multiplicación:

$\frac{1}{2} *\frac{2}{3}$

Resolviendo:

$\frac{1}{2} *\frac{2}{3} =\frac{1*2}{2*3} =\frac{2}{6} =\frac{1}{3}$

Entonces, la distancia recorrida en bus es $\frac{1}{3}$ de kilómetro.

Para calcular la distancia recorrida a pie se calcula la diferencia entre la distancia total a recorrer por el estudiante y la distancia recorrida en bus. Esto es:

$\frac{2}{3} - \frac{1}{3}$

Resolviendo:

$\frac{2}{3} - \frac{1}{3}=\frac{2-1}{3} =\frac{1}{3}$

Al estudiante le falta caminar $\frac{1}{3}$ de kilómetro.

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3 years ago

Would it make sense to state "a dilation has a scale factor of 1" explain your reasoning

adelina 88 [10]

It wouldnt be reasonable bc a scale factor of 1 would make no difference therefore meaning there is no dilation.

4 0

4 years ago

Find an equation for the line below. will give brainiest

pogonyaev

Answer: $y=-\frac{x}{2}-6.5$

Step-by-step explanation:

First find slope m. From observing the equation we can see that there are two points on the line. They are (-5,-4) and (-1,-6). Using the formula to find slope rise/run we get m = -0.5.

Now we use the point-slope formula to start the switch to the slope-intercept formula. Using (-1,-6) as our x and y values and switching m=-0.5 we get y + 6 = -0.5 ( x + 1). Simplify and we get y + 6 = -x/2 - -0.5. Subtract 6 from both sides and the final equation is y = -x/2 - 6.5.

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3 years ago

PLEASE HALP MEEEEEEE what is 50% of 4 ?

olganol [36]

Answer:

equal to 2

Step-by-step explanation:

50% is the same as 1/2 of 4

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3 years ago