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3 years ago

PLZZZ HELP ME WITH THIS

Mathematics

1 answer:

STALIN [3.7K]3 years ago

4 0

Answer:

just use the Ruler to measure the lines

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An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle

Natalka [10]

Answer:

Radius of the circle is 15 inches.

Step-by-step explanation:

Relation between length of arc, radius and the angle subtended by the arc on center is:

$\theta = \dfrac{l}{r} ..... (1)$

where $\theta$ is the central angle in radians subtended by arc

$l$ is the length of arc

$r$ is the radius of arc

We are Given the following details:

$l = \dfrac{5\pi}{4}\ inch$

$\theta = 15^\circ$

We know that $\pi \ radians = 180 ^\circ$

Converting $\theta$ to radians:

$\theta =\dfrac{\pi}{180} \times 15$ radians

Putting the values of $\theta$ and $l$ to find the value of $r$

$\dfrac{\pi}{180} \times 15 = \dfrac{5\pi}{4r}\\\Rightarrow r = \dfrac{45}{3} \\\Rightarrow r = 15 \ inches$

Hence, Radius of the circle is 15 inches.

6 0

3 years ago

Please help!!! Please helpppp!!!!?? PLEASEE I DONT WANNA FAIL I WILL MAKE BRAINLIEST <3

FromTheMoon [43]

Answer:

Triangle Sum Theory

Step-by-step explanation:

You add all the angles to get 180

4 0

3 years ago

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First step for solving x²+2x-11=4

fenix001 [56]

Answer:

subtract 4 on both side.

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Solve for k 7k+2m = kr + 4m + 3

professor190 [17]

Answer:

$\large\boxed{k=\dfrac{2m+3}{7-r}\ \text{for}\ r\neq7}$

Step-by-step explanation:

$7k+2m=kr+4m+3\qquad\text{subtract}\ 2m\ \text{from both sides}\\\\7k+2m-2m=kr+4m-2m+3\\\\7k=kr+2m+3\qquad\text{subtract}\ kr\ \text{from both sides}\\\\7k-kr=kr-kr+2m+3\\\\7k-kr=2m+3\qquad\text{distribute}\\\\k(7-r)=2m+3\qquad\text{divide both sides by}\ (7-r)\neq0\\\\k=\dfrac{2m+3}{7-r}$

6 0

3 years ago

(7-10x)/5 simplify express on integers and fractions

Likurg_2 [28]

Answer:

-2x + 7/5

Step-by-step explanation:

(7-10x)/5

= $\frac{-10x}{5}$ + $\frac{7}{5}$

= -2x + 7/5

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3 years ago