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3 years ago

Help me the comments go under ask for details and the answers go under the answers

Mathematics

1 answer:

Nikolay [14]3 years ago

3 0

The first one is true and so is the second one.

When you graph the function, every x value (or input) has only one y value (or output). If the line weren't straight then there could be multiple inputs and outputs which would mean it isn't a function

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If f(x) = 6x - 4, what is f(x) when x = 8?

NNADVOKAT [17]

The answer is 44

To find this answer, we replace x with 8 and use PEMDAS (order of operations) to simplify

f(x) = 6*x - 4
f(8) = 6*8 - 4
f(8) = 48 - 4
f(8) = 44

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Dmitry [639]

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In circle P, chord AB is 3 inches from the center and chord CD is 5 inches from the center. Chord CD is ____ than chord AB.

Leno4ka [110]

The chord that goes through the center of a circle, the diameter, is the longest chord in a circle. Any other chord will be shorter than this. The farther a chord is away from the circle, the shorter it will be. This means that chord CD is shorter than chord AB.

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Alex777 [14]

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Common household electric current is called alternating current because the current alternates direction within the wires. The v

Rainbow [258]

Answer:

n = 18 cycles

Step-by-step explanation:

To know how many times does the current oscillates in the given time, you take into account that the number of oscillation can be calculated by using the following expression:

$n=ft$ (1)

f: frequency of the oscillation of the current

t: time = 0.30s

The frequency is the number of cycles per second, that is, f = 60 cycles/s

You replace the values of f and t in the equation (1):

$n=(60\frac{cycles}{s})(0.30s)=18\ cycles$

In 0.30s the current oscillates 18 times

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