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dusya [7]
3 years ago
8

How to solve 3x-4(8x-6)=20

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0
3x -4(8x - 6) = 20

3x -32x + 24 = 20

-29x = -4

29x = 4

x = \frac{29}{4} = 7.25
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What is the description of angle 4 as it relates to the situation below?
Murljashka [212]

Answer:

The correct option is 1.

Step-by-step explanation:

The angle of elevation is the angle formed by the line of sight and the horizontal plane for an object above the horizontal.

The angle of depression is the angle formed by the line of sight and the horizontal plane for an object below the horizontal.

Since the angle 4 is the angle between the line of sight and the ground for an object above the horizontal, therefore angle 4 is the angle of elevation from the person to the radar tower.

1. "Angle 4 is the angle of elevation from the person to the radar tower."

This statement is true.

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3. "Angle 4 is the angle of depression from the person to the radar tower".

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20 is 80 percent of what number?
ziro4ka [17]

Answer: 100

Step-by-step explanation:

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MULTIPLE CHOICE QUESTION<br> ers<br> What is 0.25 as a fraction?
DanielleElmas [232]

\frac{1}{4}

Hope it helps

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3 years ago
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i have two points, (3,5) and (2,18) i need to find the exponential equation using these points. how do i do this?
Flauer [41]

Answer:  y = (5832/25)*(5/18)^x

==========================================================

Explanation:

Any general exponential function is of the form

y = a*b^x

Plug in (x,y) = (3,5) and we get

y = a*b^x

5 = a*b^3

If you plug in (x,y) = (2,18), then we'll get this other equation

18 = a*b^2

-------------------

So we have this system of equations

\begin{cases}5 = ab^3\\18 = ab^2\end{cases}

From here, we divide the two equations straight down. The left hand sides divide to 5/18. The right hand sides divide to (ab^3)/(ab^2) which simplifies to b. The 'a' terms cancel and we subtract the exponents for the b terms.

Overall, we end up with b = 5/18

---------------------

Use that value of b to find 'a'

18 = a*b^2

18 = a*(5/18)^2

18 = a*(25/324)

18*(324/25) = a

a = 5832/25

You could use the other equation as well to find 'a'

----------------------

Therefore, the equation in y = a*b^x form is y = (5832/25)*(5/18)^x

To verify this, plugging in x = 3 should lead to y = 5. Similarly, plugging in x = 2 should lead to y = 18.

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Answer:

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the middle number of the given list

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