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3 years ago

PLSS give me the answer for the B and C!! ( there two different questions)

Mathematics

1 answer:

Rzqust [24]3 years ago

5 0

Answer:

Circumference Formula :

$2\pi r$

$\frac{120}{360}$

This is the ratio we can work out:

$\frac{given \: angle}{revolution} = ratio$

$arc = ratio \times circumference$

$22 = \frac{120}{360} \times 2 \times \frac{22}{7} \times r$

$22 = \frac{44}{21} x$

$x = 22 \div \frac{41}{21}$

$x = \frac{21}{2}$

You might be interested in

Find the interior angle of a regular polygon which has 6 sides

AveGali [126]

Answer:

120°.

Step-by-step explanation:

The sum of all interior angles in a polygon with $n$ sides ( $n\in \mathbb{Z}$ , $n \ge 3$ ) is equal to $(n - 2) \cdot 180^{\circ}$ . (Credit: Mathsisfun.)

The polygon here has 6 sides. $n = 6$ . Its interior angles shall add up to $(6 - 2) \times 180^{\circ} = 720^{\circ}$ .

Consider the properties of a regular polygon. (Credit: Mathsisfun.)

All sides in a regular polygon are equal in length.
All angles in a regular polygon are also equal.

There are six interior angles in a polygon with 6 sides. All six of them are equal. Thus, each of the six interior angle will be

$\displaystyle \frac{1}{6}\times 720^{\circ} = 120^{\circ}$ .

5 0

3 years ago

What is the length of XPY in terms of pi?

Elis [28]

Circumference of a circle = 2πr

Circumference of the whole circle= 2π(30) = 60π

360 - 90 = 270

Length XPY = 270/360 x 60π = 45π

Answer: 45π m

5 0

3 years ago

Read 2 more answers

Two planes left simultaneously from the same airport and headed in the same direction towards another airport 3600 km away. The

Wewaii [24]

answer:133.3km

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Which measurements could represent the side lengths of a right triangle?

AfilCa [17]

Answer:

16 cm, 30 cm, 34 cm

Step-by-step explanation:

I got this answer simply by plugging each number into my calculator with the following equation:

$\sqrt{x^{2} +y^{2} }$

When you the lower numbers into the equation, if the lengths really do give you a triangle, then you should get the largest number as your output. This can help you with any of the other questions that you may have to answer.

6 0

3 years ago

The sum of the digits of a two-digit number is 11. When the digits are reversed, the new number is 45 more than the original num

Crank

Answer:

Step-by-step explanation:

Let the 10s digit = x

Let the units digit = y

x +y = 11 Sum of the digits = 11

10x + y + 45 = 10y + x Reversed number is 45 more than original #

10x - x + y + 45 = 10y We subtracted x from both sides.

9x + y + 45 = 10y Subtract y from both sides.

9x + 45 = 10y - y Combine the right

9x + 45 = 9y

Put x + y = 11 into the equation just found.

9x + 45 = 9(11 - x) divide through by 9

x + 45/9 = 11 - x add x to both sides

2x + 5 = 11 Subtract 5 from both sides

2x = 11 - 5

2x = 6 Divide by 2

x = 6/2

x = 3

x + y = 11

3 + y = 11

y = 11 - 3

y = 8

Now check it out.

the original number is 38

the new number is 83 which the digits are reversed.

83 - 38 = 45 just as it should.

6 0

3 years ago