D because by cooling the coins makes the metal stronger and more durable
Answer:
x = 6
a = 18 ft
b = 36 ft
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
<u>Algebra I</u>
- Factoring/Expanding
- Solving quadratics
<u>Trigonometry</u>
- Pythagorean Theorem: a² + b² = c²
Step-by-step explanation:
<u>Step 1: Define</u>
Given: Right triangle
a = 3x
b = 6x
c = 40
<u>Step 2: Solve for </u><em><u>x</u></em>
- Substitute: (3x)² + (6x)² = 40²
- Evaluate: 9x² + 36x² = 1600
- Combine like terms: 45x² = 1600
- Isolate <em>x </em>term: x² = 320/9
- Isolate <em>x</em>: x = (±8√5)/3
- Evaluate: x = ±5.96285
Since it is not a quadrant triangle, we must use the positive value for <em>x</em>.
<u>Step 3: Find legs</u>
Leg a
- Define: 3x
- Substitute: 3(5.96285)
- Multiply: 17.8885
- Round: 18
Leg b
- Define: 6x
- Substitute: 6(5.96285)
- Multiply: 35.7771
- Round: 36
Answer:
0 & 3
Step-by-step explanation:
(1/7)x² - (3/7)(x) = 0
Take (1/7)x common
(x/7)(x - 3) = 0
(x/7) = 0 when x = 0
x - 3 = 0 when x = 3
Answer:
VERTICLE AXIS IS THE ANSWER
Step-by-step explanation:
BRAINLIEST PLEASE????
.25% as a fraction would be 1/4 since there are 25 cents in a whole 1 dollar and that is one way you could think of it.