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alex41 [277]
3 years ago
13

A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector

Mathematics
1 answer:
babunello [35]3 years ago
8 0

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

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Lesechka [4]

Answer:

Answer is 6 ft.

Step-by-step explanation:

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3 years ago
When asked to write a point slope equation for a line passing through the points (-4,-7) and (3,2) a student wrote y-2=-9/7(x-3)
AleksAgata [21]
First let's find the slope
Slope formula: 
\frac{y_2-y_1}{x_2-x_1} =slope
Given the two coordinates: 
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Plug these numbers into the formula
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Final answer: 
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8 0
3 years ago
2x+4+9x<br><br> a<br> 11x+4<br> b<br> 11x<br> c<br> 15x<br> d<br> 6x+9
MissTica

Answer:

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Step-by-step explanation:

2x+4+9x

Combine like terms

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5 0
3 years ago
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zzz [600]

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Step-by-step explanation:

8 0
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You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students. What is the
Lorico [155]

Answer:

1%

Step-by-step explanation:

Given : You have used the significant level of 0.01 to estimate the average hours of television viewing for the NJ students.

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Solution:

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8 0
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