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valina [46]
2 years ago
5

The three angles in a triangle are in the ratio 3:4:5. Find the angles

Mathematics
1 answer:
insens350 [35]2 years ago
3 0
The angles are 45° 60° and 75°

Elaboration:
Let the three angles be 3x 4x and 5x
( since the sum of interior angles of triangle=180° )
3x+4x+5x= 180
12x = 180
x = 15
3x= 45
4x= 60
5x= 75


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Solve using quadratic equations
olasank [31]
4x² - 9x² + 5 = 0
4x² - 4x - 5x + 5 = 0
4x(x - 1) - 5(x - 1) = 0
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Set each binomial equal to zero. 

4x - 5 = 0
4x = 0 + 5
4x = 5
x = 5/4

x - 1 = 0
x = 0 + 1
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Your solutions are x = 1, 5/4
7 0
3 years ago
In a science test, Jamie solved 42 correct and 18 incorrect answers.What is the percentage of correct questions and how did you
Fantom [35]

Answer:70%

Step-by-step explanation:  make a proportion:  42 = x

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6 0
3 years ago
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Help solve step by step
Tatiana [17]

Answer:

c^12

Step-by-step explanation:

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8 0
3 years ago
X^2-6x+1=0 solve by completing square
Harrizon [31]
The answer is x= +- 2 square root of 2 + 3
5 0
2 years ago
Read 2 more answers
Jack wrote the given expression 4^5 x 2^3 in a simpler form as 2^8.
mylen [45]

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Hope this helps.

6 0
3 years ago
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