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Alinara [238K]
3 years ago
15

Each week, Kelly works 2 days for 4 hours each day and earns $5 an hour. Len works 5 days for 2 hours each day and earns $4 an h

our. Kelly says they both earn the same amount. Does this statement make sense? Complete the explanation. The statement ?Doesdoes not make sense. Kelly earns (2 × 4) × $5 = $
Mathematics
1 answer:
IceJOKER [234]3 years ago
7 0

Answer:

Same i.e. $40

Step-by-step explanation:

It is given that,

Kelly works 2 days for 4 hours each day and earns $5 an hour.

Len works 5 days for 2 hours each day and earns $4 an hour.

For Kelly,

Earning = (2×4)×$5 = $40

For Len,

Earning = (5×2)×$4 = $40

It means that the earning for both Kelly and Len is same i.e. $40.

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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

V ≅ 25.47 V

So, the numerical value of the mean voltage is 25.47 V

Learn more about mean volatage here:

brainly.com/question/17928028

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3 years ago
12/13+(-1/13 complete the expressions to find the sum or difference..
Afina-wow [57]

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11/13

Step-by-step explanation:

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Ginger and Caleb each have 0.77 of a dollar. Ginger does not have any quarters. Caleb does not have any dimes. Explain how many
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Ginger can have 7 dimes and 7 pennies while Caleb can have 3 quarters and 2 pennies.

<h3>What is an equation?</h3>

An equation is an expression used to show the relationship between two or more numbers and variables.

Ginger and Caleb each have $0.75

Ginger does not have any quarters. He might have 7 dimes and 7 pennies.

Caleb does not have any dimes. He can have 3 quarters and 2 pennies.

Ginger can have 7 dimes and 7 pennies while Caleb can have 3 quarters and 2 pennies.

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Answer:

You can plot both linear equations on the graph to show where they intersect.

Step-by-step explanation:

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