Answer: 28
Step-by-step explanation: 6 faces, 12 edges, 8 vertices
Answer:
$301 - $397
Step-by-step explanation:
Using the Empirical rule
1) 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
3)99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ .
From the above question,
Mean = 349 , standard deviation = 24.
Confidence interval = 95%
Using 2)95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
μ – 2σ
= 349 - 2(24)
= 349 - 48
= 301
μ + 2σ
349 + 2(24)
= 349 + 48
= 397
Therefore, according to the standard deviation rule, approximately 95% of the students spent between $301 and $397 on textbooks in a semester.
If the circumference of a circle is tripled, the area increases hugely. Hope this helps!
<span><span>1. <span>x =(8-√76)/2=4-√ 19 = -0.359 </span>
</span><span> <span>
2. x =(8+√76)/2=4+√ 19 = 8.359 </span>
</span></span>
the length of a side of a square is the square root of the area
side length = sqrt(164)
side length = 12.8062
Round the answer as needed
since it asks for approximate, it is probably going to be 13 inches
