PLEASE HELP!!! In the diagram, line AB is a perpendicular bisector of segment CD. What is the length of CD?
1 answer:
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Answer:
10
Step-by-step explanation:
Here , the given data is :
- Principal = Rs 4400 . ( P )
- Time = 3 years . ( T )
- Rate of Internet = 8% . ( R )
We can calculate Simple Interest using ,
On substituting the respective values ,
⇒ SI = P × R × T / 100.
⇒ SI = Rs 4400 × 8 × 3 / 100 .
⇒ SI = Rs 44 × 8 × 3 .
⇒ SI = Rs 1,056 .
<u>Hence</u><u> </u><u>the</u><u> </u><u>requ</u><u>ired</u><u> </u><u>Interest</u><u> </u><u>is</u><u> </u><u>Rs</u><u> </u><u>1</u><u>,</u><u>0</u><u>5</u><u>6</u><u>.</u>
First, to find out the number of students who scored below Amanda, we must find the z-score value of Amanda's score using the formula below.
where Z is the z-score, Χ is the expected average value, μ is the mean of Χ, and δ is the standard deviation. Thus, we have
Thus, using the z-table, we have P(Z<0.90) = 0.8159. Since we have wanted to find the number of students who scored below Amanda, then from the whole, we have (1 - 0.8159) = 0.1841. That means, out of 1000 students, 0.1841 of them scored below Amanda. Thus, we have (0.184)(1000) = 184.
Answer: 184 students
where Z is the z-score, Χ is the expected average value, μ is the mean of Χ, and δ is the standard deviation. Thus, we have
Thus, using the z-table, we have P(Z<0.90) = 0.8159. Since we have wanted to find the number of students who scored below Amanda, then from the whole, we have (1 - 0.8159) = 0.1841. That means, out of 1000 students, 0.1841 of them scored below Amanda. Thus, we have (0.184)(1000) = 184.
Answer: 184 students