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KiRa [710]
3 years ago
11

If the smallest angle of a triangle is 20 degrees and it is included between sides of 4 and 7, then (to the nearest tenth) the s

mallest side of the triangle is 3.2 - true or false?
Mathematics
2 answers:
velikii [3]3 years ago
7 0
Hello,
Al 'Kashi theorem says:

a²=4²+7²-2*4*7*cos 20°=12.37721...
==>a=3.518126381...≈3.5 ==>False.
REY [17]3 years ago
3 0

Answer:

The answer is False

Step-by-step explanation:

we know that

Applying the law of cosines, find the length of the third side of the triangle

c^{2}= a^{2}+b^{2}-2abcos(C)

In this problem we have

a=4\ units, b=7\ units, C=20\°

substitute the values and solve for c

c^{2}= 4^{2}+7^{2}-2*(4*7)*cos(20\°)

c= 3.5\ units -------> smallest side of the triangle

therefore

3.5\neq 3.2

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Answer:

x = 3

Step-by-step explanation:

Hi there,

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9x = (8x + 3)

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Hope this answer helps. Feel free to ask questions. Cheers.

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2 years ago
What is 6 times 2/3 (two thirds)?
r-ruslan [8.4K]
The answer would be four
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3 years ago
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Ne4ueva [31]
2.6 rounds to 3, and 0.33 would round to 0.50. Adding 3 and 0.50 together would equal to 3.50. 59 and 3.50 are no where near to each other which concludes Minh is incorrect.
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3 years ago
Consider a sequence given by the formula f(n)=3n-1 starting with n=1. Generate the first 5 terms of the sequence
Rufina [12.5K]

Answer:

The first 5 terms are 2, 5, 8, 11, 14.

Step-by-step explanation:

  1. You use the formula to find out each term.
  2. f(n)=3n-1 starting with n=1. If n=1 that is the 1st term, if n=2 that is the 2nd term, and so on. n means what number term it is.
  3. Now to find each term:
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  • n=3: f(3)= 3(3)-1= 9-1=8 The 3rd term is 8
  • n=4: f(4)= 4(3)-1= 12-1= 11 The 4th term is 11
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ziro4ka [17]
Let garret’s age be x

x + 2 + (x + 3) + 2 = 39
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x = 32/2
x = 16

Garrett’s age after two years = 16 + 2 = 18
3 0
3 years ago
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