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gtnhenbr [62]
4 years ago
11

Please help me... i need it right now!

Mathematics
1 answer:
vovikov84 [41]4 years ago
8 0

Yo sup??

I guess the answer should be

=l²-πl²/4

=l²-0.783l²

=0.215l²

Hope this helps.

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What is the reference angle of -3 radians? Explain.
Korolek [52]

Reference angle of -3 radians is α= - 171° 53 min 15 sec .

We know the formula for calculating circular arc

Let l=circular arc which ic according to central angle of the circle α

l=((2R π)/360)α  Let l=1 radian and R=1 (unit circle with radius R=1)

1= ((2π)/360)α => α= 360/(2π)= 180/π= 57° 17 min 45sec

Angle of the 1 radian is equal to angle 57° 17min 45sec

According to this

angle of the  -3 radians = -3 ( 57° 17min 45sec) = - 171° 53min 15sec

when you count in the clockwise direction.

Good luck!!!


8 0
4 years ago
What is the x-value of the vertex of f(x) = -x2 + 9x - 11 ?
WARRIOR [948]

Answer:

7

Step-by-step explanation:

7

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3 years ago
Calculus find the functions and state the domain
Sergio039 [100]

Answer:

check image below

Step-by-step explanation:

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8 0
3 years ago
Out of 45 student questioned,42 like mathematics or English or both,27 student like mathematics and 22 like English.
Olin [163]

1) 3 people

2) 20 people like mathematics only

3) 7 people like both mathematics and English

<h3>What is set?</h3>

A set is a collection of well defined elements.

Analysis:

number of people in the class = 45

number that like mathematics or English or both = 42

number that like both subject = x

number that like mathematics only = 27 - x

number that like English only = 22 - x

1) number that did not like any subject = 45 - 42 = 3

27 - x + x + 22 -x = 42

49 - x = 42

x = 49 - 42 = 7

2)  number that like mathematics only = 27 - 7 = 20

3) number that like mathematics and English = 7

Learn more about set: brainly.com/question/2166579

#SPJ1

5 0
2 years ago
Elaine found the following in her pocket. How much money was in her pocket
jenyasd209 [6]

Answer:

we need the numbers... or like the coins, or something to solve it with. you need to include what was actually in here pocket lol

3 0
3 years ago
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