2 years ago

What is the relationship between cos(90°) and cos(-90°)?

Mathematics

1 answer:

sdas [7]2 years ago

7 0

Answer:

they have the same value (0)

Step-by-step explanation:

Cosine is an even function, meaning that cos(x) = cos(-x). When x=90°, we have ...

cos(90°) = cos(-90°)

Both values happen to be zero.

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If f(x) = 3x and mc010-1.jpg which expression could be used to verify that g(x) is the inverse of f(x)?

saul85 [17]

You could subsitute g(x) for x in f(x) and if you get x as a result, then that is indeed the inverse

ex
if
f(x)=x-2
the inverse which is g(x) is
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2 years ago

Read 2 more answers

In 2000 the total amount of gamma ray bursts was recorded at 6.4 million for a city. In 2005, the same survey was made and the t

ratelena [41]

Let's assume

It started in 2000

so, t=0 in 2000

$P_0=6.4million$

we can use formula

$P(t)=P_0 e^{rt}$

we can plug value

$P(t)=6.4 e^{rt}$

In 2005, the same survey was made and the total amount of gamma ray bursts was 7.3 million

so, at t=2005-2000=5

P(t)=7.3 million

we can plug value and then we can solve for r

$7.3=6.4 e^{r*5}$

$r=0.02632$

now, we can plug back

$P(t)=6.4 e^{0.02632t}$

now, we have

P(t)=1 billion =1000 million

so, we can set it and then we can solve for t

$1000=6.4 e^{0.02632t}$

$t=191.924$

approximately

$t=192$

Year is 2000+192

year is 2192................Answer

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2 years ago

Write the equation in exponential form. log4 1/16 = -2

Allisa [31]

The answer is 4^-2 = 1/16

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What is the area of the firgure?

qaws [65]

Answer:

768

Step-by-step explanation:

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vampirchik [111]

-52-36-22+46+42+8 = -18

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