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3 years ago

What is the measure of an angle at the centre whose radius is equal to arc length?

Mathematics

1 answer:

klasskru [66]3 years ago

4 0

Answer:

radian

Step-by-step explanation:

A radian is a unit of angle that is equal to the angle created at the center of a circle whose arc is equal in length to the radius.

<h2><u><em>Hope it helps!!!</em></u></h2><h2><u><em>Brainliest pls!!!</em></u></h2>

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One-third of the difference of a number and nine is negative fifteen. What is the number?

Tems11 [23]

hi <3

lets call the unknown number 'x' for now and form an equation from what we know

1/3(x-9) = 15

now multiply both sides by 3

x - 9 = 45

add 9 to both sides

x = 54

hope this helps :)

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3 years ago

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I need help finding this answer to this inequality -10[9-2x]-x≤2x-5

Ad libitum [116K]

Answer:

x≤5

Step-by-step explanation:

-10(9-2x)-x≤2x-5

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19x-2x≤90-5

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3 years ago

The sides of a regular polygon are always congruent (Fto each other.<br> True<br> False

BaLLatris [955]

Answer:

Polygons are congruent

Step-by-step explanation:

Polygons are congruent when they have the same number of sides, and all corresponding sides and interior angles are congruent

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3 years ago

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If a person rows to his favorite fishing spot 14 miles downstream in the same amount of time that he rows 2 miles upstream and i

Maru [420]

We will use distance formula which states:

$d=r \times t$

where 'd' is the distance, 'r' is rate or speed and 't' is time taken.

So, $t=\frac{d}{r}$

Let 'u' be the speed of boat in still water.

A person rows 14 miles downstream to the fishing spot.

So, the speed of boat downstream = (u+6) mph

Time taken by boat to go downstream = $\frac{14}{u+6}$ hr

He rows 2 miles upstream from the fishing spot.

So, the speed of boat upstream = (u-6) mph

Time taken by boat to go upstream = $\frac{2}{u-6}$ hr

Since, The person took same amount of time in going downstream and then going upstream.

So, $\frac{14}{u+6}=\frac{2}{u-6}$

Cross multiplying, we get

$14 (u-6)= 2(u+6)$

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$12u = 96$

u = 8

So, speed of boat in still water is 8mph.

Now, Time taken in going downstream = $\frac{14}{u+6}$

= $\frac{14}{8+6}$

= 1 hr

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= $\frac{2}{8-6}$

= 1 hr

So, total time taken to cover 16 miles is 2 hours.

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3 years ago

Angle 3 and Angle 6 are alternate interior angles. If angle 3 is (3x-5) degrees and angle 6 is (5x-25), what is the value of x?

Nataly [62]

Answer:

x = 10

Step-by-step explanation:

<u>Alternate interior angles measure same as per their property:</u>

m∠3 = m∠6
3x - 5 = 5x - 25
5x - 3x = 25 - 5
2x = 20
x = 10

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3 years ago

What is the measure of an angle at the centre whose radius is equal to arc length?​

What is the measure of an angle at the centre whose radius is equal to arc length?