Answer:
- 204
Step-by-step explanation:
2x = 60
x = 30
6 - 7(30) = -204
Answer:
B. $1750
Step-by-step explanation:
The mean of the discrete uniform distribution is given by:
![M = \frac{a+b}{2}](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Ba%2Bb%7D%7B2%7D)
In this problem, we have that
.
The expected time to find the car is:
![M = \frac{3+11}{2} = 7](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7B3%2B11%7D%7B2%7D%20%3D%207)
7 hours are expected to find the car.
The helicopter costs $250 per hour to rent.
7*$250 = $1750
So the correct answer is:
B. $1750
Answer:
b = 24/5
General Formulas and Concepts:
<u>Pre-Alg</u>
- Order of Operations: BPEMDAS
- Equality Properties
Step-by-step explanation:
<u>Step 1: Define equation</u>
12 = 5/2b
<u>Step 2: Solve for </u><em><u>b</u></em>
- Rewrite: 5/2b = 12
- Divide both sides by 5/2: b = 24/5
<u>Step 3: Check</u>
<em>Plug in b to verify it's a solution.</em>
- Substitute: 12 = 5/2(24/5)
- Multiply: 12 = 12
Area of the octagon = 8 * side length^2 / [4 * tan (180/8)]
Area of the octagon = 8 * 9^2 / [4 * tan(22.5)]
Area of the octagon = 648 / 4 * 0.41421
Area of the octagon = 648 /
<span>
<span>
<span>
1.65684
</span>
</span>
</span>
Area of the octagon =
<span>
<span>
<span>
391.1059607446
</span>
</span>
</span>
square inches
Gray Area = <span>
<span>
<span>
391.105 minus square area
</span></span></span><span>Gray Area = 391.105 -81
</span>Gray Area = <span><span>310.105
square inches
Source:
http://www.1728.org/polygon.htm
</span> </span>
Answer:
{x,y}={1,7}
Step-by-step explanation: