3 years ago

Which of the following number sentences is true? A -9=9 B-9=-(9) C 9=(-9) D 9=-(-9)

Mathematics

1 answer:

kondaur [170]3 years ago

3 0

Answer:

A and D are the true number sentences

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8.9 because I used a calculator

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PLEASE HELP!! NO LINKS!!

dlinn [17]

Answer:

42.1 cm

Step-by-step explanation:

θ = 265°

Radius (r) = 9.1 cm

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Plug in the values into the equation

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3 years ago

The function f(t)= 5 tan 2 t, does not have an amplitude and has a period of π.

trasher [3.6K]

ANSWER

False

EXPLANATION

The tangent function has no amplitude because it is not bounded.

The given tangent function is

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This is of the form

f(t)=a tan(bt)

The period is given by

$T = \frac{\pi}{ |b| }$

$T = \frac{\pi}{ |2| } = \frac{\pi}{2}$

The first statement is true but the second is false.

Hence the whole statement is false.

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