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kirill [66]
1 year ago
6

What is value of x? Enter your answer in the box.​

Mathematics
1 answer:
disa [49]1 year ago
7 0

Answer:

x = 10

Step-by-step explanation:

the ray is an angle bisector and divides the opposite side into segments that are proportional to the other 2 sides , that is

\frac{x+4}{2x +1} = \frac{8}{12} = \frac{2}{3} ( cross- multiply )

2(2x + 1) = 3(x + 4) ← distribute parenthesis

4x + 2 = 3x + 12 ( subtract 3x from both sides )

x + 2 = 12 ( subtract 2 from both sides )

x = 10

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The answer is 6200
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Y=-x^2+4<br> y=2x+1<br> I'm not sure how to solve for this system of equations
balu736 [363]
Do you need x as your answer or y 
4 0
3 years ago
Identify the class​ width, class​ midpoints, and class boundaries for the given frequency distribution.
Crank

Answer:

a. Class width=4

b.

Class midpoints

46.5

50.5

54.5

58.5

62.5

66.5

70.5

c.

Class boundaries

44.5-48.5

48.5-52.5

52.5-56.5

57.5-60.5

60.5-64.5

64.5-68.5

68.5-72.5

Step-by-step explanation:

There are total 7 classes in the given frequency distribution. By arranging the frequency distribution into the refine form we get,

Class

Interval frequency

45-48 1

49-52 3

53-56 5

57-60 11

61-64 7

65-68 7

69-72 1

a)

Class width is calculated by taking difference of consecutive two upper class limits or two lower class limits.

Class width=49-45=4

b)

The midpoints of each class is calculated by taking average of upper class limit and lower class limit for each class.

M=\frac{lower class limit+upper class limit}{2}

Class

Interval Midpoints

45-48 \frac{45+48}{2}=46.5

49-52 \frac{49+52}{2}=50.5

53-56 \frac{53+56}{2}=54.5

57-60 \frac{57+60}{2}=58.5

61-64 \frac{61+64}{2}=62.5

65-68 \frac{65+68}{2}=66.5

69-72 \frac{69+72}{2}=70.5

c)

Class boundaries are calculated by subtracting 0.5 from the lower class limit and adding 0.5 to the upper class interval.

Class

Interval Class boundary

45-48 44.5-48.5

49-52 48.5-52.5

53-56 52.5-56.5

57-60 56.5-60.5

61-64 60.5-64.5

65-68 64.5-68.5

69-72 68.5-72.5

7 0
3 years ago
Which equation does not represent a line with an x-intercept of 3?
Gwar [14]

Answer: D. y=3x-1 does not =3

Step-by-step explanation:

To find the x-intercept, we let y=0 and solve for x. 

Using choice A: 

0=-2x+6 

2x=6 

x=3 

Using choice B: 

0=− 1/3x + 1

1/3x = 1

x = 3

Using choice C: 

0= 2/3x−2 

−2/3x = -2

x=3 

Using choice D: 

0=3x-1 

-3x=1 

x=−1/3

So, the correct answer is choice D. Does NOT = 3

5 0
1 year ago
Read 2 more answers
Jayce walked a total of 32 kilometers by making 4 trips to school. How many trips will Jayce have to make in all to walk a total
kotegsom [21]

Answer:

6

Step-by-step explanation:

8km per trip

48 ÷ 8 = 6

6 0
2 years ago
Read 2 more answers
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