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pentagon [3]
3 years ago
9

What is the probability of getting either blue or green on a spinner that is 3/10 green and 1/5 blue

Mathematics
1 answer:
Luba_88 [7]3 years ago
5 0
Since it's either/or, we can simply add up 3/10 (0.3) and 1/5 (0.2) to get 0.5=1/2

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Perform the operation indicated, then place the answer in the proper location on the grid. The perimeter of a triangle is 7a - 1
vlada-n [284]

Answer: 4 a - 3 b

Step-by-step explanation:

Since, the perimeter of the triangle = sum of all the three side of the triangle.

Here, two sides of the triangle are 2a + b and a - 9b,

And, the perimeter of the triangle = 7 a - 11

Let third side = x

Therefore, 2 a + b + a - 9 b + x = 7 a - 11 b

⇒ 3 a - 8 b + x = 7 a - 11 b

⇒ x = 7 a - 11 b - 3 a + 8 b

⇒ x = 4 a - 3 b  ( by operating like terms)

3 0
3 years ago
A 1 km long train travelling at a speed of 60km/h enter a tunnel 1km long. What time will the train take to come out of the tunn
zysi [14]

Answer:

2 minutes

Step-by-step explanation:

The front of the train enters the tunnel and travels 1 km before the rear of the train enters the tunnel.  Thus, the total distance traveled by the front of the train is 2 km, and this is covered in a certain number of hours:

Since distance = rate times time, time = distance / rate.  In this particular case we have:

                                              2 km

time = distance / rate = ------------------- = (1/30) hr

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(1/30) hr converts to 2 minutes, since 1 hr = 60 minutes

3 0
2 years ago
Simply the expression.
irina1246 [14]
The answer is ctually 44 
68-2 (3x1)4
68-2x3x4
68-24
44
4 0
3 years ago
BRAINLIEST TO CORRECT HURRY
Vlad [161]

Answer:

>

Step-by-step explanation:

Ummm...

0.20 is bigger than 0

4 0
3 years ago
Plzzz help with this
love history [14]
The volume of the cylinder is 1,286.1.
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2 years ago
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