When two secants intersect, they form an angle (3x) equal to:<span>
½ (the larger intercepted arc </span>minus<span> the smaller intercepted arc)
3x = [(4x + 50) - 30] / 2
6x = 4x + 50 -30
2x = 20
x = 10
Source:
http://www.1728.org/circangl.htm
</span>
Answer:
-8
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define</u>
3x + 10 = 4
2 + 5x
<u>Step 2: Solve for </u><em><u>x</u></em>
- Subtract 10 on both sides: 3x = -6
- Divide 3 on both sides: x = -2
<u>Step 3: Evaluate</u>
- Substitute in <em>x</em>: 2 + 5(-2)
- Multiply: 2 - 10
- Subtract: -8
1m = 100 cm
so
40 m = 4,000 cm
25 m = 2,500 cm
10 m = 1,000 cm
perimeter of big rectangle = 2(4,000 + 2000) = 12,000 cm
perimeter of small rectangle on the left: 2(2,500 + 800) = 6,600 cm
perimeter of small rectangle on the right: 2(1,000 + 800) = 3,600 cm
perimeter of circle = πd = 3.141593 x 200 = 628.32 cm
total area of the pitch and seating area :
= 12,000 + 6,600 + 3,600 + 628.32 = 22,828.32<span> cm
answer
</span>22,828.32 cm<span>
</span>
A quarter of its original size would be 25% of 100%, right? Therefore, the tumor would have to shrink 75%. If each treatment, the tumor shrinks 5% that would mean it takes 15 treatments to shrink 75 percent.
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