The lengths of the sides of a triangle are 4,5,6 can the triangle still be a right triangle

No. We can use the pythagorean theorem to prove this.The equation being a2 + b2 = c2. We then use two of  the least of the three numbers, which are 4 and 5, to substitute for “a” and “b”. We get a value for “c” which is 6.4, rounded off to the nearest tenth. This value is greater than 6. Note that this is a very logical way of solving the problem since a greater number for “a” and “b” would lead a greater value for “c”

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

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-12 -5(x + 4) = 3x

-12 - 5x - 20 = 3x

-12 - 20 - 5x = 3x

-32 - 5x = 3x

    + 5x   + 5x

-32 = 8x

8         8

- 4= x