The empirical rule states that at 95% the measurements would be within 2 standard deviations of the mean.
You are given a mean of 68 inches and a standard deviation of 4.
2 times the standard deviation = 2 x 4 = 8
So 95% of the heights would be between 68-8 = 60 inches and 68+8 = 76 inches.
Answer:
31.25
Step-by-step explanation:
25/12=2.083333
15 x 2.0833333=31.24999999995
round up to get 31.25
Answer:
4
Step-by-step explanation:
so 8*6=48, so we know that (4*6)+(_*6) should equal 48.
4*6=24
subtract 24 by 48 and we get 24.
now you probably know that it equals 4, but to be sure, divide 24 by 6, and you'll get 4.
Answer:
$0.90
Step-by-step explanation:
1 quart = 2 pints
Write a proportion:
$1.80 / 4 pint = x / 2 pint
Cross multiply:
4x = 3.60
Divide:
x = 0.90
The price per quart is $0.90.
Answer:
x=62
Step-by-step explanation:
You know that the triangle is isosceles because two of the sides are the same length. According to the Base Angles Theorem, if a triangle is isosceles, then the corresponding angles of the two congruent sides are also congruent. This means that angle x is equal to the third unlabeled angle. And since the angles in a triangle add up to 180, you can write the equation:
56+x+x=180
56+2x=180
2x=124
x=62
