Answer: x = 10
Step-by-step explanation:
x - 8 = 2
+8 +8
x = 10
Ok, we know that there are 270 degrees in a triangle, so just add 49+57, the you'll get 106, 270-106=164. ANSWER: 164
Answer:
n+5×4-7
Step-by-step explanation:
if the mean is 70 minutes, then 90 minutes is 2 standard deviations above 70. if you look at the bell curve i drew, the percent of exams that took over 90 minutes is 2.5%
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