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kirill115 [55]
2 years ago
11

I will give brainiest answer to whomever solves this

Mathematics
1 answer:
Nezavi [6.7K]2 years ago
5 0

Let the numbers be x = 5x+18

3(5x+18) + 4x= 16

15x+ 54+ 4x= 16

19x = 16-54

X=-38/19

X= -2

5x+18= 5 × -2+18 = 8

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3 years ago
A circle has a circumfernce of 13 it has a arc length of 11. What is the central angle of the arc in degrees
tatiyna

Answer: 304.6°

Step-by-step explanation:

First of all, using the circumference of the circle formula to find the radius of the circle.

Circumference of the circle = 13, ie

2πr = 13,

r = 13/2π ---------------------------- 1

Now getting the radius of the circle now, you now substitute for this in the formula for finding the length of an arc to get the central angle.

Arc length = 11 , ( 2πr0°/360) or (πr0°/180), so

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----------- ----------------- 3

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Now, put equation 1 in equation 3 and solve.

0° = 1980

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-----------

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= 3960/13

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Please be meticulous and understand the way I change the r in the denominator. It was the rule in fraction when dividing.

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