4 years ago

Solve for z:a) 4√7 b) 3√7 c) 51 d) 12

Mathematics

2 answers:

Liula [17]4 years ago

7 0

The correct answer is d

erastova [34]4 years ago

4 0

The answer is d) 12 , i think

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4 years ago

First do 5,000,000 x 0.1% = 5,000. Then do 5,000 x 99% and your answer is $4,950

elena55 [62]

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3 years ago

Suppose the voltage in an electrical circuit varies with time according to the formula V(t) = 40 sin(t) for t in the interval [0

grigory [225]

The numerical value of the mean voltage is 25.47 V

To find the numerical value of the mean voltage, V of V(t) = 40 sin(t), we integrate V(t) with respect to t over the interval [0.π]

So,

$V = \frac{1}{\pi } \int\limits^\pi _0 {V(t)} \, dt \\V = \frac{1}{\pi } \int\limits^\pi _0 {40sint} \, dt \\V = \frac{1}{\pi } [-40cost]_{0}{\pi } \\V = \frac{1}{\pi } -[40cos\pi - 40cos0]\\\\V = \frac{1}{\pi } (-[40 X (-1) - 40 X 1})\\V = -\frac{1}{\pi } [-40 - 40]\\V = \frac{80}{\pi } \\V = 25.465 V$