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scoray [572]
3 years ago
8

in a continuous data the median class is 40-50. If the cumulative frequencies of the premedian class is one half of the sum of t

he frequencies. Find the median.​
Mathematics
1 answer:
Ede4ka [16]3 years ago
3 0

To find the median, add up the frequency column to find how many trains there were in total. There were 44 trains in total in this grouped frequency table, so work out 44 + 1 2 = 45 2 = 22.5. The median is therefore between the 22nd and 23rd values.

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Delete AC and focus on the intersection of AB and BC. Keeping points B and C fixed, move point A to different locations
Amanda [17]

The image of the triangles are missing and so i have attached it.

Answer:

Explained below.

Step-by-step explanation:

If we delete line AC in the diagram, we are left with line AB and BC.

Now, we are told to leave points B and C fixed.

Now, if we move Point A to different locations, ∠ ABC will increase or decrease depending on the new location that point A is put.

Lastly, if we move Point A to a point on line CB, it means ∠ABC = 0° because it isn't subtended at any angle at all.

3 0
3 years ago
Emergency help PleaseILL MARK YOU BRAINLIST
Salsk061 [2.6K]

Answer:

240

Step-by-step explanation:

180 decided by 3 because 75% is 3/4 then you take that and add it to your original number

5 0
3 years ago
Read 2 more answers
Find the area of a 2-inch-wide decorative border around a rectangular canvas painting, where L is the length and W is the width
lions [1.4K]

Answer:

  4L +4W +16 square inches

Step-by-step explanation:

The area of the border is the equivalent of that of a rectangle with a width equal to the width of the border, and a length equal to the length of the midline of the border. That length is the perimeter of the rectangle that is L+2 units long and W+2 units wide.

  border midline length = 2((L+2) +(W+2)) = 2L +2W +8

Then the border area is ...

  border area = (border width)(border length) = (2)(2L +2W +8)

  border area = 4L +4W +16 . . . square inches

_____

You can also figure this as the difference between the area of the rectangle with the border and the area of the rectangle inside the border:

  border area = total area - canvas area

  = (L+4)(W+4) -LW = LW +4L +4W +16 -LW

  = 4L +4W +16 . . . . square inches

4 0
3 years ago
If point S has coordinates (8,-6). Which of the following is an equation of the line that contain point S?
MissTica
B
Plug in the 8 for x in the equation, you will get -6 which is y

-3/4(8)=-6
6 0
4 years ago
From the top of a cliff 426 feet high, the angle of depression of a ship is observed to be 18.2°. how far out is the ship? 140 f
lara [203]
If we are to connect both tips of the cliff to the approaching ship, we form a right triangle. The height of the cliff is the opposite side of the angle of depression. The trigonometric function that would allow us to solve for the distance is tangent.
                    tan 18.2° = opposite /adjacent = 426 ft/ x ft
The value of x from the equation is 1295.68 ft
Thus, the answer is the second choice. 
6 0
3 years ago
Read 2 more answers
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