14. combining scores again the first stat exam had a mean
of 80 and a standard deviation of 4 points; the second
had a mean of 70 and a standard deviation of 15 points.
reginald scored an 80 on the first test and an 85 on the
second. sara scored an 88 on the first but only a 65 on the
second. although reginald's total score is higher, sara
feels she should get the higher grade. explain her point
of view.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

80 the answer is 80

step-by-step explanation:

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.