Answer:
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.
Answer: 200
Because for each minute it goes up 200 more.
Answer:
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no one help you this is bad app hahahahaha
15. [4] insufficient information. only given SA
16. There are 3 right triangles, 3 Pythagorean theorem equations
x²+b²= 16²
12²+a² = x²
a²+4² = b²
combine equations using substitution to get in terms of only x
substitute b² for (a² +x²) in first equation
x²+a²+4²=16²
substitute a² for (x² - 12²)
x²+x²-12²+4² = 16²
solve for x
2x² - 144 + 16 = 256
2x² = 256 + 144 - 16
2x² = 384
x² = 384/2
x² = 192
x = 13.85
rounded to nearest tenth, x = 13.9
Answer: T is 4
Step-by-step explanation:
