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atroni [7]
3 years ago
5

In the diagram below, DE is parallel to XY What is the value of y?

Mathematics
1 answer:
Lostsunrise [7]3 years ago
4 0
The answer is b . 86
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Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain
sergey [27]
The rise or an increase in altitude is represented by positive sign and a decend or decrease in altitude is represented by negative sign. 

First the helicopter descended 1200 feet. So the change in altitude will be -1200 feet.

Then the helicopter rose by 800 feet. So the change in altitude will be 800 feet.

Finally the helicopter descended by 450 feet. So the change in altitude will be -450 feet.

The net change in altitude will be the sum of all the above 3 changes. 
Change in altitude = -1200 + 800 - 450 = -850 feet

The negative sign indicates a descend i.e. loss in altitude. So the net change in altitude was a loss of 850 feet. 
3 0
3 years ago
The sum of the interior angles of a polygon is 540°. How many sides does the polygon have?
8090 [49]
The answer is B. 5 !
7 0
3 years ago
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Answer:

A,D

Step-by-step explantion

A,d

6 0
3 years ago
Which graph shows a negative rate of change for the interval 0 to 2 on the x-axis?
777dan777 [17]

Answer:

THE ANSWER OM EDGE IS (C)

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Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Suppose you drop a ball from 120 feet. The ball will bounce to 25 of its previous height. What is the total distance the ball tr
tamaranim1 [39]

Answer:

277.1 feets

Step-by-step explanation:

Drop height = 120 feets

Ball bounces 2/5 of previous height

Height after 1st bounce :

120 * 2/5 = 48 feets

Return distance = 48 feets

Height after second bounce :

48 * (2/5) = 19.2 feets

Return distance = 19.2 feets

Height after 3rd bounce :

19.2 * (2/5) = 7.68 feets

Return distance = 7.68 feets

Height after 4th bounce :

7.68 * (2/5) = 3.072 feets

Return distance = 3.072 feets

Height after 5th bounce :

3.072 * (2/5) = 1.2288 feets

(120 + (2*48) + (2*19.2) + (2*7.68) + (2*3.072) + 1.2288) = 277.1328

= 277.1 feets

6 0
2 years ago
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