A sample of n=8 scores has a mean of m=12. What is the value of ∑x for this sample
Answer: We are given the mean of 8 scores is 12.
We are required to find the sum of these 8 observation's, 
We know that:
We are given:
Hence, sum of 8 observation's, 
Step-by-step explanation:
<h3>Part A</h3>
<u>Circumference formula:</u>
<u>Find π:</u>
- 25.12 = 8π ⇒ π = 25.12/8 ⇒ π = 3.14
- 9.42 = 3π ⇒ π = 9.42/3 ⇒ π = 3.14
<h3>Part B</h3>
<u>Area formula:</u>
<u>Find π:</u>
- 50.24 = π*8²/4 ⇒ 50.24 = 16π ⇒ π = 50.24/16 ⇒ π = 3.14
- 7.065 = π*3²/4 ⇒ 7.065 = 9π/4 ⇒ π = 4*7.065/9 ⇒ π = 3.14
<h3>Part C</h3>
- The value of π is same - 3.14 from each case we have
Answer:
a² c² - a² d² - b² c² +b² d² + 4 cabd
Step-by-step explanation:
okay na po ba Yan
Answer:
<em>y</em> = -2
<em>x</em> = -2
Step-by-step explanation:
Both <em>x </em>and <em>y </em>equal -2 in the table.
