3 years ago

Which expression makes the equation true for all values of x?

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

3 0

Answer:

16x - 16 = 4(4x - 4) Step-by-step explanation:

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Help please; I need the right answer

Ad libitum [116K]

Answer:

Step-by-step explanation:

$\cos x+\sqrt{2}=-\cos x \\ 2\cos x = -\sqrt 2 \\ \cos x = -\dfrac{\sqrt 2}{2}\\ \\ \Rightarrow x = \pm \arccos\Big(-\dfrac{\sqrt 2}{2}\Big)+2k\pi,\quad x\in \mathbb{Z}\\ \Rightarrow x =\pm\dfrac{3\pi}{4}+2k\pi\\ \\ \\k = -1 \Rightarrow x < 0\\\\ k=0 \Rightarrow x 2\pi$

3 0

4 years ago

Read 2 more answers

PLEASE HELP ASAP, I WILL GIVE 40 POINTS IF THE RIGHT ANSWER, AND BRAINLEST, ASAP

Julli [10]

Answer:

5/52

Step-by-step explanation:

There are 52 cards in a deck, with 26 red and 26 black cards. There are 2 red ones, 2 black threes, and 1 six of hearts. The # of favorable outcomes is 2 + 2 + 1 = 5, so the answer is 5/52.

7 0

1 year ago

emilio writes the inequality 17(f+2) + 45.99<200 to better represent the situation, using the variable f to represent the num

dlinn [17]

Expand the left hand side:

$17f+34+45.99$