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3 years ago

Solve the equation

Mathematics

1 answer:

12345 [234]3 years ago

3 0

Answer:

Step-by-step explanation:

x+(x+1)+(x+2)+(x+3)=-210

x+1x+1+1x+2+1x+3=-210

4x+6=-210

4x=-210-6

4x/4x=-216/4

x=54

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ehidna [41]

Answer:

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3 years ago

i need help with the last two. I forgot the formula and wondering if you will help me find which one is and isnt a triangle

Nimfa-mama [501]

Answer:

3. D) 26, 7, 31

4. B) 6, 34, 27

Step-by-step explanation:

Both #3 and #4 use the same strategy: the two shorter sides' sum has to be greater than the longer side.

#3:

2 + 8 is 10, which is less than 13. So A wouldn't form a triangle.

12 + 22 is 34, which is the length of the longer side. So B wouldn't form a triangle either.

14 + 18 is 32, which is less than 40. So C wouldn't form a triangle.

7 + 26 is 33, which is greater than 31. So D would form a triangle.

D. 26, 7, and 31 are the only lengths of the ones shown that form a triangle.

#4:

17 + 18 is 35, which is greater than 19. So A would form a triangle.

11 + 22 is 33, which is greater than 25. So C would also form a triangle.

5 + 18 is 23, which is greater than 20. So D would form a triangle.

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B. 6, 34, and 27 are the only lengths of the ones shown that don't form a triangle.

6 0

2 years ago

WILL MARK BRIANLIEST!

gayaneshka [121]

Answer:

(4, - 2 )

Step-by-step explanation:

Given the 2 equations

x + y = 2 → (1)

x - y = 6 → (2)

Adding the 2 equations term by term will eliminate the term in y, that is

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3 years ago

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svlad2 [7]

Answer:

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Step-by-step explanation:

From the question,

Assuming the diagram attached, is similar to diagram required to support the question,

From the diagram,

Applying pythagoras theorem

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Where a = 13.4 in, b = x in, c = 9.8 in.

Substitute these values into equation 1

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