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olasank [31]
3 years ago
14

If f(x) = 5 - 2x, find f(-15)

Mathematics
1 answer:
FromTheMoon [43]3 years ago
3 0

Answer: 35

Please give me Brainliest

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Can someone help me figure this out no guessing
laiz [17]
Your answer is x = 2.92 = 3.
To answer this question you need to use trigonometry, so the first step is to identify the hypotenuse, opposite, and adjacent.
Because the angle 73 is in the bottom corner next to the length x, we know that the length x is the adjacent. The length 10 is opposite the right angle so this must be the hypotenuse.
We know that cos(θ) = adjacent/hypotenuse, so we can substitute in what we know:
cos(θ) = adjacent/hypotenuse
cos(73) = x/10
Now we can rearrange for x:
cos(73) = x/10
× 10
cos(73) × 10 = x
Finally we just type this into the calculator and get the answer as 2.92 or 3.
I hope this helps!
5 0
3 years ago
Systems By Graphing - Solve All Correctly For a Thanks, 5-Stars, And A Brianliest!
BartSMP [9]

Answer:

Step-by-step explanation:

Amari= Graph C and Solution is (-6,-2)

Bella= Graph A and Solution is (3,4)

Carl= Graph B and Solution is (0,-3)

0 solutions because the slopes are the same. The lines will never cross because they are at the exact same angle.

No, I do not agree with Joey because the lines have different slopes and will lead to the system cross which is the solution.

1st graph: y=2x-1 and y=7 solution #1= (4,7)

2nd graph: y=-2x-3 and y=1/2x solution #2= (-2,1)

3rd graph: y=x and y= -1/5+6 solution #3= (5,5)

I had this exact same assignment a few months ago, my teacher didn't use the 2nd slide but I had the 1st and 3rd slide so this should help!

4 0
3 years ago
Solve the inequality 6x - 8 > 4x + 26.
Mashutka [201]

Answer:

the answer is x>17 I hope it helps you and next time use mathpapa

3 0
4 years ago
Which set of side lengths can form a triangle?
emmainna [20.7K]

Answer:

C:4 cm, 8 cm, 5 cm

Step-by-step explanation:

sum of length of any two sides of a triangle will be larger than the third side.

4 0
3 years ago
Proof David Berkowitz is a psychopath <br><br> 25 points + marked brainiest!
Anuta_ua [19.1K]

Answer:

According to the “Hare Psychopathy Checklist” a psychopath is a person who knows right from wrong in our society but often feels no guilt, remorse or empathy when they engage in wrong actions. They lie easily, blame others for their actions and often hurt people who are close to them. David Berkowitz meets the criteria of Hare’s checklist and is believed to be a true psychopath. Berkowitz is known as the “Son of Sam”, a thrill seeking serial killer who terrorized the city of New York for over a year. Information about David Berkowitz’s background, personality traits and lifestyle and his serial killer profile help to prove that he is in fact a psychopath. In conclusion, this essay will prove to readers that David Berkowitz is a notorious…

Step-by-step explanation:

4 0
4 years ago
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