Answer: I.Q. of 130 will have a z score (or standard score) of 2.
Step-by-step explanation:
Let X be a random variable that represents the I.Q. score.
Formula for Z-score : 
As per given, mean I.Q. = 100 and the standard deviation =15
For X = 130,
So, I.Q. of 130 will have a z score (or standard score) of 2.
The correct answer is A !
In a right triangle, one angle should be a right angle, which means that angle should be 90°. Right angles are always 90°.
And in any triangle, the sum of the 3 interior angles should add up to 180°, this rule is always the same. Therefore, to find the third angle, we should simply subtract the angles we already know from the angle sum of triangle.
We can therefore list this equation:
Third angle = 180° - 24° - 90°
Third angle = 66°
Your answer should be 66°
There are 3 odd numbers on the die: 1, 3, and 5. So on a given throw you have a 3/5 chance of getting an odd number. For 50 throws that's
50•(3/5)=30
Short side length = x
Medium side = x + 7
Long side = 5x
Total 49, so
x + x + 7 + 5x = 49
If you combine like terms:
7x + 7 = 49
Subtract 7 from both sides
7x = 42
Divide both sides by 7
x = 6 inches
