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IgorLugansk [536]
2 years ago
10

A biologist is studying rainbow trout that live in a certain river and she estimates their mean length to be 529 millimeters. As

sume that the lengths of these
rainbow trout are normally distributed, with a standard deviation of 70 millimeters.
Use this table or the ALEKS calculator to find the percentage of rainbow trout in the river that are longer than 487 millimeters. For your intermediate
computations, use four or more decimal places. Give your final answer to two decimal places (for example 98.23%).
Ok
Mathematics
1 answer:
vredina [299]2 years ago
7 0

Answer:

See the book it will definitely help you

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PLEASE HELP!! URGENT
Slav-nsk [51]

1. The problem statement tells you to find "the area of the hexagonal face".

2. If we assume the intent is to find the shaded area of the face only, it differs from the area of a regular hexagon in that there is a hole in the middle.

3. You must find the area of the regular hexagon, and subtract the area of the circular hole in the middle.

4. The formula for the area of a circle in terms of its radius is

... A = πr²

5. The formula for the area of a regular hexagon in terms of the radius of the circumcircle is

... A = (3√3)/2·r²

6. The radius of the circumcircle of the regular hexagon is given. No additional information is needed.

7. You can use the trig functions of the angles of an equilateral triangle to find the apothem, but there is no need for that when you use the formula of 5.

8. All this is unnecessary. The apothem is (8 mm)·(√3)/2 = 4√3 mm ≈ 6.9282 mm, the shorter leg is (8 mm)·(1/2) = 4 mm. The perimeter is 6·8 mm = 48 mm.

9. The area of the hexagon is

... A = 3√3/2·(8 mm)² = 96√3 mm² ≈ 166.277 mm²

10. The area of the circle is

... A = π·(4 mm)² = 16π mm² ≈ 50.265 mm²

11. The area of the hexagonal face is approximately ...

... 166.277 mm² - 50.265 mm² = 116.01 mm²

6 0
3 years ago
Sun Country Bus Lines has 80,000 shares of stock outstanding. What would the dividend per share of stock be from a dividend decl
Evgen [1.6K]
The answer is $1.37
and if this is under it-

How many shares of stock does Julie Norris hold if her share of the dividend is $6.85?

The answer is 5

Hope I was helpful

8 0
3 years ago
Veronica is saving money to buy a saddle for her horse that cost $175. She plans to save $10 the first month and then increase t
ArbitrLikvidat [17]
7 months. 10+15+20+25+30+35+40=175
3 0
3 years ago
Noah earned w dollars over the summer. Mai earned x dollars, which is y dollars
Aneli [31]

Answer:

what is the question please explain

5 0
3 years ago
Twenty percent of the 640 pitches Kendall threw last year were strikes. Which table can be used to find the number of strikes sh
Ksju [112]

Answer:

1 out of every 5 throws were strikes.

Step-by-step explanation:

20% is one fifth of 100%.

5 0
3 years ago
Read 2 more answers
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