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GrogVix [38]
3 years ago
11

What is the value of X?

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
3 0

Answer:

x=10

Step-by-step explanation:

We can use the angle bisector theorem to solve this problem

8             12

-------- = ---------

x+4         2x+1

Using cross products

8(2x+1) = 12(x+4)

Distribute

16x+8 = 12x+48

Subtract 12x from each side

16x -12x +8 = 12x-12x +48

4x +8 = 48

Subtract 8 from each side

4x+8-8 = 48-8

4x = 40

4x/4 = 40/4

x=10

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Given the lengths of two sides of a triangle, find the range for the length of the third side. Write an inequality.
djverab [1.8K]

Answer:

| a - b | < length of third side < a + b

Step-by-step explanation:

Visualize the two given sides of the triangle (let's call then a and b), joined at the vertex of the triangle, and forming an angle. We can join the other free end of these two segments, with another segment whose length would vary according to how tiny or large the angle is. We can spread the aperture of the angle they form as much as we can just below  (not reaching this angle measure, because in such case, there will be no triangle of tangible area. In such case, the length of the joining segment will be limited by the addition of the two sides:

length of third side < a + b

In the case the aperture of the angle formed by the two given sides is diminished as much as possible to still form a measurable triangle, the angle has to be just larger than zero, and in such case, the segment joining the other to ends of a and b would be just larger than the absolute value of the difference between a and b:

length third side > | a - b|

These are the two extreme cases, and the length of the third side must be within these limits.

5 0
3 years ago
Read 2 more answers
A right cylinder has a height of 20 1/2ft and a diameter of 1 1/5 times it's height what is the volume of the cylinder? Use 3.14
anygoal [31]
Volume (V) of a cylinder is the area of circular base (pi×r^2) times it's length/height (h):
V =  \pi {r}^{2} (h) \:  \: \pi = 3.14
h = 20.5 ft
diameter (d) = 1 1/5 × h, 1 1/5 = 6/5 = 1.20
d = 1.20 × 20.5 = 24.6 ft
radius (r) = 1/2 d = 24.6/2 = 12.3 ft
V =  \pi {r}^{2} (h)  \\ V = 3.14 ({12.3}^{2}) (20.5)  \\ V = 3.14 (151.29) (20.5) \\ V = 475.05 (20.5) = 9738.54  \: {ft}^{3}

4 0
3 years ago
Paula goes to the store and buys a binder, a folder, and a highlighter. The highlighter's cost is half the cost of the binder, a
tatyana61 [14]

Answer:

Cost of the binder = $5

Cost of the highlighter = $2.5

Cost of the folder = $2

Step-by-step explanation:

Let

Cost of the binder = x

Cost of the highlighter = 1/2x

Cost of the folder = x - 3

Total cost = $9.50

Total cost = Cost of the binder + Cost of the highlighter + Cost of the folder

9.50 = (x) + (1/2x) + (x-3)

9.50 = x + 1/2x + x - 3

9.50 + 3 = x + 1/2x + x

12.50 = 2x + 1/2x

12.50 = 2 1/2x

12.50 = 5/2x

x = 12.50 ÷ 5/2

= 12.50 × 2/5

= 25/5

x = $5

Cost of the binder = x = $5

Cost of the highlighter = 1/2x = 1/2*6 = $2.5

Cost of the folder = x - 3

= 5 - 3 = $2

3 0
3 years ago
Easy !<br> What is the slope of y = -6x + 1?<br> A. 6<br> B. 1<br> C. -1<br> D. -6
algol [13]

Answer:

The answer is D. -6

Step-by-step explanation:

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3 years ago
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What is the value of 9 2/3 -4 1/5
nevsk [136]

Answer:

Patati

Step-by-step explanation:

When’d gif

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4 years ago
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