3 years ago

Which ratio is not equivalent to the other three? A.2/5 B.12/15 C.6/15 D.18/45

1 answer:

3 0

Lets do equal fractions by multiplying and dividing them by a number:
(2/5)(3/3) = 6/15
= (6/15)(3/3) = 18/45
so these are equivalent:
2/5 = 6/15 <span>= 18/45
</span>
The fraction 12/15 is not equivalent to them, because there is no number that multiplying and dividing it gives the others.

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For a circle with a diameter of 6 meters, what is the measurement of a central angle (in degrees) subtended by an arc with a len

Sholpan [36]

Answer:

$\boxed{\boxed{\theta=150^{\circ}}}$

Step-by-step explanation:

We know that,

$\text{Arc length}=r\cdot \theta$

where,

r = radius,

θ = central angle in radian.

Given,

diameter = 6 m, so radius = 3 m.

$\text{Arc length}=\dfrac{5}{2}\pi$

Putting the values,

$\Rightarrow \dfrac{5}{2}\pi=3\theta$

$\Rightarrow \theta=\dfrac{5}{2\times 3}\pi$

$\Rightarrow \theta=\dfrac{5}{6}\pi=\dfrac{5}{6}\times 180^{\circ}=150^{\circ}$

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3 years ago

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Two squares are attached to the sides of a quarter circle as shown.

olya-2409 [2.1K]

Area of a square is ; 10 * 10 = 100
We have 2 squares so total is 200.

Area of a circle is pi* r^2 = 3.14 * 100 = 314
But we have quarter of a circle so area will be 314/4 = 78.5

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3 years ago

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1 hour is equal to how many seconds

AURORKA [14]

Answer: 3600 seconds

Step-by-step explanation:

60 seconds in a minute

60 minutes in an hour

(60)(60) = 3600

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3 years ago