3 years ago

A+B =90 and sin a = 3/5 find cos B

Mathematics

1 answer:

Semmy [17]3 years ago

6 0

Idk Thai is for me to get points

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Which of the following is true for the relation f(x) = x2 + 8? Only the inverse is a function. Both the equation and its inverse

Alchen [17]

<u>ANSWER</u>

Only the equation is a function

<u>EXPLANATION</u>

$f(x)=x^2+8$ is graphed above with its inverse $f^{-1}(x)=\pm \sqrt{x-8}$ .

We perform the vertical line test for both the equation and its inverse.

The equation $f(x)=x^2+8$ passed the vertical line hence it is a function.

However, $f^{-1}(x)=\pm \sqrt{x-8}$ failed the vertical line test, hence it is not a function.

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3 years ago

Line r is parallel to the graph of 2x – 3y = –18. The y-intercept of line ris

KATRIN_1 [288]

Answer:

3 or (3,0)

Step-by-step explanation:

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3 years ago

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The limit as x-approaches 3 of f(x) is x-3 over x squared -9

Luden [163]

notice that the denominator can be factored into (x-3)(x+3).

Now you can cross out (x - 3) from the numerator and denomiantor resulting in a simplified fraction of $\frac{1}{x+3}$

Plug the limit value (which is 3) into the simplified fraction.

Answer: $\frac{1}{6}$

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2 years ago

Help! will give brainlist!

slega [8]

Answer:

117.5

Step-by-step explanation:

y= 3.5x + 30, where x = his number of toys sold

y= 3.5(25) + 30

y= 117.5

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3 years ago

-5.3w+8.0w-11.6=14-25.6+2.7w i need help

IRISSAK [1]

Answer:

w= 1

Step-by-step explanation:

hope this helps :)

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3 years ago