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FinnZ [79.3K]
3 years ago
6

Urgent! A tower that is 103 feet tall casts a shadow 123 feet long. Find the angle of elevation of the sun to the nearest degree

.

Mathematics
1 answer:
Trava [24]3 years ago
7 0

Answer:

39.9 rounded to 40 degrees

Step-by-step explanation:

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X is normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of randomly sampling a scor
VikaD [51]

Answer:

Using calculator: 0.0415

Using Z-score Table: 0.0418

Step-by-step explanation:

There are two ways you can solve this problem.

1. Use the normal distribution function on a calculator.

Entered values:

Lower Limit: 126

Upper Limit: 999999999999999... (To encompass all the data)

Standard Deviation: 15

Mean: 100

2. Find the Z score and look up probabilities on table.

Formula for Z score:

Z=\frac{x-mean}{standard deviation} \\\\Z= \frac{126-100}{15}=1.7333...

Z = 1.7333

This means that the value 126 is 1.733 standard deviations away from the mean. We can look this value up on the Z table to find its corresponding probability.

This will show us the probability of the random sampling being equal to or lower than 126.

P = 0.9582

So to find the probability of it being above, we simply just calculate the inverse as all probabilities on the curve = 1.

1-0.9582 = 0.0418

NOTE: Values found from the table will usually be a bit different from if you find it from a calculator, the one you need will depend on the method you use in class.

Hope this helped!

6 0
2 years ago
Give four rational numbers equivalent to : a) 2/7 b) 3/5​
serg [7]

Answer:

gg

Step-by-step explanation:

6 0
2 years ago
PLEASE HELP ME <br> *algebra 2*
Blizzard [7]
I hope this helpss.

8 0
3 years ago
What multiplication fact could you use to find a number that can be divided evenly by 8 and by 9
Ad libitum [116K]
72 would be a good one
8 0
3 years ago
Read 2 more answers
Yoko runs 7 miles in 50 minutes at the same rate how many miles would she run in 75 minutes
Vsevolod [243]

Answer: 10.5 miles

Step-by-step explanation: If she runs 7 miles for 50 minutes, if you half it, she runs 3.5 miles in 25 minutes. This means if you add 7 and 3.5 miles, you would add 50 and 25 minutes,

So 10.5 miles in 75 minutes in your answer

6 0
3 years ago
Read 2 more answers
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