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MAXImum [283]
2 years ago
9

Please I really need help, this is my final

Mathematics
1 answer:
Paul [167]2 years ago
3 0

Answer:

6.12

Step-by-step explanation:

tan 27≈0.51

Know that tan=\frac{opposite}{adjacent}

0.51=\frac{x}{12}

Multiply 12 on both sides

6.12=x

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Select ALL the correct answers.
jolli1 [7]

Answer:

(4x+5)(-3x-1) = -12x²-19x-5

Option A:

   (-16x² + 10x - 3) + (4x² - 29x - 2) = -12x²-19x-5

   Option A is correct.

Option B:

   3(x - 5) - 2(6x² + 9x + 5) = -12x²-15x-25

   Option B is wrong.

Option C:

   2(x - 1) - 3(4x² + 7x + 1) = -12x²-19x-5

   Option C is correct.

Option D:

   (2x² - 11x - 9) - (14x² + 8x - 4) = -12x²-19x-5

   Option D is correct.

4 0
2 years ago
D/dx 3^x= <br>Find the derivative <br>​
gregori [183]

Differentiate using the exponential rule, which determines that \bf{\frac{d}{dx}[a^{x}]  } is \bf{a^{x} \ In(a) } when a=3.

\boldsymbol{ 3^{x} \ In(3) \ \to \ \ \ Answer }

Therefore, the correct option is "E". You just have to remove the parentheses.

\red{\boxed{\green{\boxed{\boldsymbol{\purple{Pisces04}}}}}}

4 0
1 year ago
If (2,3) is reflected over the y axis what is the new coordinates
Andrei [34K]

Answer:

(-2,3)

Step-by-step explanation:

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed). Notice that B is 5 horizontal units to the right of the y-axis, and B' is 5 horizontal units to the left of the y-axis. the y-axis is the point (-x,y).

3 0
3 years ago
The table of values represents a quadratic function. What is the average rate of change for f(x) from x = 0 to x = 10 ? Enter yo
Elena-2011 [213]
By definition we have that the average rate of change is given by:
 AVR = (f (x2) - f (x1)) / (x2 - x1)
 Substituting the values we have:
 AVR = (204 - (-6)) / (10 - 0)
 Rewriting we have:
 AVR = (204 + 6) / (10 - 0)
 AVR = 210/10
 AVR = 21
 Answer:
 
the average rate of change for f (x) from x = 0 to x = 10 is:
 
AVR = 21
8 0
3 years ago
A dolphin is swimming 10 feet below the surface.it descends another 12 feet before rising 4 feet. How far below the surface is i
Katyanochek1 [597]
10 ft +12 ft =22ft so it 22 ft.
22ft-4ft is 18ft.
18 ft is the answer
6 0
3 years ago
Read 2 more answers
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