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2 years ago

Is it possible to build a triangle with side lengths of 3, 3, and 9?

Mathematics

2 answers:

Ostrovityanka [42]2 years ago

5 0

answer:

step-by-step explanation:

each side must be smaller than the sum of other sides

9+3>3-right

3+3<9-wrong

Olenka [21]2 years ago

4 0

Answer:

Step-by-step explanation:

The sides of a triangle must be

a-b< c< a+b where a and b are the two smaller sides and c is the larger side

3-3 <9< 3+3

0<9<6

This is not true so it cannot make a triangle

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3 years ago

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Answer:

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3 years ago

Find the value of c that completes the square

PilotLPTM [1.2K]

Answer:

The value of c that completes the square $x^2+2x+c$ is 1

Step-by-step explanation:

We need to find the value of c that completes the square $x^2+2x+c$

The formula used will be: $a^2+2ab+b^2=(a+b)^2$

In the question given the value c can be found by breaking the middle term. we are given 2x while the general formula is 2ab for middle term so,

2(x)(1) = 2x

so, c= 1

Solving:

$x^2+2x+c\\=x^2+2(x)(1)+(1)^2-(1)^2\\=(x+1)^2-1$

So, the value of c that completes the square $x^2+2x+c$ is 1

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