Answer:
35ab-12
Step-by-step explanation:
Answer:
<em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>0</u></em>
Step-by-step explanation:
<em><u>The ammeter is connected in series with the circuit. So its reading will show the value of the current flowing in the circuit. Hence, the reading of the ammeter is equal to 1A. Hence, the voltmeter will show a reading of 2V.</u></em>
Answer:
225/4
Step-by-step explanation:
If x is one leg, and 15 is the hypotenuse, then the other leg (let's call it y) can be found with Pythagorean theorem:
15² = x² + y²
y² = 225 − x²
y = √(225 − x²)
The area of the triangle is:
A = ½ xy
A = ½ x √(225 − x²)
To find the maximum of A, find dA/dx and set it equal to 0. As suggested by the problem, it may help to square both sides first:
A² = ¼ x² (225 − x²)
A² = ¼ (225x² − x⁴)
Take derivative using power rule and chain rule:
2A dA/dx = ¼ (450x − 4x³)
0 = ¼ (450x − 4x³)
0 = 450x − 4x³
0 = 2x (225 − 2x²)
x = 0 or 15/√2.
x = 0 is a minimum. x = 15/√2 is the maximum. So the maximum area is when the triangle is a 45-45-90 triangle.
A = ½ xy
A = ½ (15/√2) (15/√2)
A = 225/4
Y = -2x+5
y = -3x+8
hope this helps :)