An isosceles triangle ,
two sides are equal and one is different.
An scalene triangle,
would be neither side are equal.
An equilateral triangle,
has 3 equal sides.
Ur answer is probably 6?5idk
Plugging into the Given Formula the value of y:
Multiply the left side:
Add 14 to both sides to get:
Divide both sides by 8 and we get:
Therefore, x=7 and the proof is complete
your correct answer should be: z = (x - mean) / SD = (79 - 70) / 3 = 3
P (Z > 3)? = 1 - F (z) = 1 - F (3) = 0.00135 i hope this is helpful! :D