Last week, sarah had exams in math, spanish, and english. on the math exam, the mean was µ = 30 with s = 5, and sarah had a score of x = 45. on the spanish exam, the mean was µ = 60 with s = 8 and sarah had a score of x = 68. on the english exam, the mean was µ = 70 with s = 8 and sarah had a score of x = 70. for which class should sara expect the better grade?

Sara expect the better grade for Math class.

Step-by-step explanation:  

Consider the provided information.

On the Math exam, the mean was µ = 30 with s = 5, and Sarah had a score of X = 45.

Z score for Math:

On the Spanish exam, the mean was µ = 60 with s = 8 and Sarah had a score of X = 68.

Z score for Spanish:

On the English exam, the mean was µ = 70 with s = 8 and Sarah had a score of X = 70.

Z score for English:

We can observe that Z score of Math is greater than Spanish and English.

Which means that Sarah did the best in her Math exam.

Hence, Sara expect the better grade for Math class.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest

24+x=y

step-by-step explanation: