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S_A_V [24]
2 years ago
13

NEED HELP ASAP, PLEASE

Mathematics
2 answers:
kozerog [31]2 years ago
6 0

Answer:

3

Step-by-step explanation:

8x and 7x + 3 are vertically opposite angles.

Vertically opposite angles are equal,

8x = 7x + 3

8x - 7x = 3

x = 3

ch4aika [34]2 years ago
5 0

Answer:

DCE=156°

Step-by-step explanation:

8x=7x+3

8x-7x=3

x=3

BCD+DCE=180

8x+DCE=180

24+DCE=180

DCE=180-24

DCE=156°

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A bicycle wheel with the diameter 70cm is making 25 revolutions while travelling. Find the distance covered by the bicycle
Diano4ka-milaya [45]

Answer: 5500cm.

Step-by-step explanation:  

A revolution  corresponds to circumference of the bicycle wheel.

The radius of the circle = 70/2 since two radii makes a diameter.

Therefore r = 35cm

Circumference of a circle =  2πr or πd where π = 3.142 or 22/7

      We now have              =  2 x 22/7 x 35

Therefore 0ne revolution   = 220cm.

Therefore, the distance traveled by making 25 revolution

                                            = 220 x 25

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4 0
3 years ago
Be helpful please !
kolbaska11 [484]

Answer:

ANSWER: angle <1 = 140°

3 0
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