What is the value of x in this triangle

Mathematics

2 answers:

polet [3.4K]4 years ago

5 0

Answer:

Step-by-step explanation:

if x is the least it only makes common sense

HOPE THIS HELPS!

Masteriza [31]4 years ago

3 0

Answer: Option 'C' is correct.

Step-by-step explanation:

Since we have given that

∠1 = 62°

∠2 = 53°

∠3 = x°

As we know that "Sum of all angles in triangle is supplementary":

$\angle 1+\angle 2+\angle 3=180^\cir\\\\62^\circ+53^\circ+x=180^\circ\\\\115^\circ+x=180^\circ\\\\x=180^\circ-115^\circ\\\\x=65^\circ$

Hence, Option 'C' is correct.

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kari74 [83]

Answer:

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Step-by-step explanation:

Hi there!

Background of the Discriminant

The discriminant $b^2-4ac$ applies to quadratic equations when they are organised in standard form: $ax^2+bx+c=0$ .

All quadratic equations can be solved with the quadratic formula: $x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}$ .

When $b^2-4ac$ is positive, it is possible to take its square root and end up with two real, distinct values of x.

When it is zero, we won't be taking the square root at all and we will end up with two real solutions that are equal, or just one solution.

When it is negative, it is impossible to take the square root and we will end up with two non-real solutions.

Solving the Problem

$3x^2+5x=-1$

We're given the above equation. It hasn't been organised completely in $ax^2+bx+c=0$ , but we can change that by adding 1 to both sides to make the right side equal to 0:

$3x^2+5x+1=0$