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AveGali [126]
3 years ago
11

HELP PLEASE find x. a. 6 b. 3 c. 9 d. 12

Mathematics
1 answer:
oee [108]3 years ago
5 0

Answer:

  a.  6

Step-by-step explanation:

The segments either side of an angle bisector are proportional:

  6/4 = (x+3)/x

  1 +1/2 = 1 + 3/x . . . . divide out the fractions

  1/2 = 3/x . . . . . . . . . subtract 1

  x = 6 . . . . . . . . . . . . multiply by 2x

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????????????????vbzjjzjdvdu
Romashka-Z-Leto [24]

Answer:

A

Step-by-step explanation:

There is an empty dot on 4, meaning b is not equal to 4.

The arrow is going to the left of 4, so it means that b is less that four.

Hope that helps!

3 0
2 years ago
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The Knowles/Armitage (KA) group at Merrill Lynch advises clients on how to create a diversified investment portfolio. One of the
Pani-rosa [81]

Answer:

See the attached file for the answers.

Step-by-step explanation:

See the attached file for the explanation

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3 years ago
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Y varies directly as x if y is 2 when x is 8 then the constant of variation is 1/4
sp2606 [1]

Answer:

a. True.

Step-by-step explanation:

y = kx

y = 2 when x = 8 gives:

2 = 8 * k

k = 2/8 = 1/4.

6 0
2 years ago
5. Find the value(s) of x so that the line containing the points (2x + 3, x + 2) and (0, 2) is
Dvinal [7]

Answer:

  x = -2 or -9

Step-by-step explanation:

You want the values of x such that the line defined by the two points (2x+3, x+2) and (0, 2) is perpendicular to the line defined by the two points (x+2, -3-3x) and (8, -1).

<h3>Slope</h3>

The slope of a line is given by the slope formula:

  m = (y2 -y1)/(x2 -x1)

Using the formula, the slopes of the two lines are ...

  m1 = (2 -(x+2))/(0 -(2x+3)) = (-x)/(-2x-3) = x/(2x +3)

and

  m2 = (-1 -(-3-3x))/(8 -(x+2)) = (2+3x)/(6 -x)

<h3>Perpendicular lines</h3>

The slopes of perpendicular lines have product of -1:

  \dfrac{x}{2x+3}\cdot\dfrac{2+3x}{6-x}=-1\\\\x(3x+2)=(2x+3)(x-6)\qquad\text{multiply by $(2x+3)(6-x)$}\\\\3x^2+2x=2x^2-9x-18\qquad\text{eliminate parentheses}\\\\x^2+11x+18=0\qquad\text{put in standard form}\\\\(x+2)(x+9)=0\qquad\text{factor}

<h3>Solutions</h3>

The values of x that satisfy this equation are x = -2 and x = -9. The attached graphs show the lines for each of these cases.

4 0
1 year ago
Find x if eg is a median of triangle DEF.. 5x-17 &amp; 3x+1
GREYUIT [131]
If eg is the median, that means
5x-17=3x+12x=18x=9
4 0
3 years ago
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