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4 years ago

Simplify each expression as much as possible, and rationalize denominators when applicable. √(17/25)=?

Mathematics

1 answer:

amm18124 years ago

7 0

Answer:

The answer to your question is: $\frac{\sqrt{17}}{5}$

Step-by-step explanation:

$\sqrt{\frac{17}{25} } = \frac{\sqrt{17} }{\sqrt{25}} = \frac{\sqrt{17}}{5}$

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Which of the following is the equation of a circle whose center is at the origin and whose radius is 4?

leva [86]

Answer:

x²+y²=16

Step-by-step explanation:

the general equation for a circle is given as :

(x−h)²+(y−k)²=r²

where (h, k) is the coordinate of the center of the circle and r is the radius

in this case h=0, k=0 and r = 4

equation becomes

x²+y²=4²

x²+y²=16

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3 years ago

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A sector of a circle of 7cm has an area of 44cm².calculate the angle of the sector,correct to the nearest degree π =22\7

Hitman42 [59]

Answer:

$\theta=102.85^{\circ}$

Step-by-step explanation:

Given that,

The radius of circle, r = 7 cm

The area of sector, A = 44cm²

We need to find the angle of the sector. The formula for the area of sector is given by :

$A=\dfrac{\theta}{360}\pi r^2$

Solve for $\theta$ .

$\theta=\dfrac{360A}{\pi r^2}\\\\\theta=\dfrac{360\times 44}{\dfrac{22}{7}\times 7^2}\\\\\theta=102.85^{\circ}$

So, the angle of the sector is equal to $102.85^{\circ}$ .

7 0

3 years ago

A textbook costs $58 and sells for $70. Find the rate of markup based on the selling price.

notka56 [123]

58r=70

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3 years ago

HELP PLEASE!! ASAP!!

densk [106]

Answer:

The estimated distance is 8.1cm.

The actual distance is 8.106cm.

Step-by-step explanation:

Given that the Pythogorean Theorem, c² = a² + b². Then substitute the following values into the formula :

${c}^{2} = {a}^{2} + {b}^{2}$

Let a = 5.1cm,

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3 years ago

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Paladinen [302]

Answer:

No, because it has repeating domains (x-values) which is -2

Step-by-step explanation:

A function should not have repeating x-values.

8 0

2 years ago