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katovenus [111]
3 years ago
11

I need help for this problem.

Mathematics
2 answers:
Lelechka [254]3 years ago
7 0

Answer:

Step-by-step explanation:

Equation

12x + (8x + 5) + 15x = 180    All triangles have 180o for their interior angles.

12x + 8x + 5 + 15x = 180      Combine like terms on the left

35x + 5 = 180                        Subtract 5 from both sides

     <u>  - 5      -5</u>

35x =175                                Divide by 35

x = 5

It's not clear what you want. x = 5 is one possibility

12x = 60

15x = 75

8x+5=45

is another possiblity

Harrizon [31]3 years ago
3 0

Answer:

Step-by-step explanation:

12x+15x+8x+5=180 degree(being sum of interior angles of a triangle)

35x=180-5

x=175/35

x=5

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Answer:

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Step-by-step explanation:

To answer the question, we test each option as follows

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C. If p and q are distinct primes, then p+q is prime as well.

The above statement is not correct as 5 + 7 = 12 an even number

D. If a divides b and c divides d, then a+c divides b+d.

The above statement is not correct as

8 is divisible by 2 and

9 is divisible by 3

but 17 is not divisible by 5

E. If p is prime, then so is p+2.

The above statement is not correct as 7 + 2 = 9 which is divisible by 3

G. If a and b both divide c, and a and b are relatively prime, then ab divides c.

The above statement is true as both a and b are factors of c

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The above statement is true as there are infinitely many numbers

I. If p is prime, then p2 has exactly 3 positive divisors.

The above statement is true

1, p and p²

J. There are three consecutive odd numbers that are prime.

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3, 5, 7.

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