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Naya [18.7K]
3 years ago
15

How do you write 20% as a decimal

Mathematics
2 answers:
77julia77 [94]3 years ago
3 0

Answer:

0.2

Step-by-step explanation:

20/100=0.2


ryzh [129]3 years ago
3 0

Answer:

0.2

Step-by-step explanation:


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Mathew is watching a car race on TV. His favorite car covered 10 laps of 3.6 miles each in 18 minutes. What is average speed of
Karo-lina-s [1.5K]
In the given question, all the necessary information's are already provided. Using these information's it is easy to find the average speed of the car in miles per hour. It is given that the car covers 10 laps in 18 minutes and each lap is 3.6 miles in length.
Total distance covered by the car = (10 * 3.6) miles
                                                     = 36 miles
Now we have to convert the time from minutes to hours. So
18 minutes = 18/60 hours
                   = 3/10 hours
Now we can easily calculate the average speed of the favorite car of Mathew.
Average Speed = 36 * (10/3) miles/hour
                           = 120 miles/ hour

8 0
3 years ago
Suppose P(E) = 0.3. Find P(not E). Suppose P(not E) = 65%. Find P(E).
larisa [96]
Try this option:
1. rule: P(E)+P(not E)=1.
2. according to the rule above
P(not E)=1-P(E)=1-0.3=0.7;
P(E)=1-P(not E)=(100-65)%=35%.
6 0
3 years ago
BRAINLIESTT ASAP! PLEASE HELP ME :)
alukav5142 [94]

Answer:

216 min

3 hours and 36 min or 3.6 hours

Step-by-step explanation:

1/9+1/6

6+9/54

15/54

5/18

18/5

60*18/5

1080/5

/= fraction sign

3.6 hours

Step-by-step explanation:

Blake can do work in hours = 9

Blake can do a part of work in 1 hour = 1/9

Ned can paint the same room in six hours.

Ned can do a part of work in 1 hour = 1/6

They can do a part of work together in 1 hour =  1/9+1/6

                                                                          = 5/18  

Now they can do 5/18}  part of work in hour = 1

So, they can do whole work in hours =  1/5/18

                                                            =  3.6

Hence it will take 3.6 hours to paint the room if they work together.

7 0
3 years ago
the student Council wants to rent a ballroom for the junior prom. the balroom’s rental rate is $1500 for three hours and $125 fo
Tomtit [17]
They can rent it for 5 1/2 hours
4 0
3 years ago
Edwin and Anthony are building a rectangular deck in their backyard.The Longer side is 2 more than 1/3 the perimeter. The shorte
vlada-n [284]

Answer: The perimeter is 30ft.

Step-by-step explanation:

Let's define:

L = length of the longer side.

S = length of the shorter side.

P = perimeter

we know that for a common rectangle:

P = 2*S + 2*L

We aso know that:

L = 2ft + (1/3)*P

S = (1/10)*P

L = S + 9ft.

So we have a system, let's find the perimeter only using this system (So i will ignore the equation for the perimeter of a rectangle)

First, we can replace the third equation in the first equation, now we have a system with only two equations:

S + 9ft = 2ft + (1/3)*P

S = P/10

Now we can replace the second equation in the first equation, and get:

P/10 + 9ft = 2ft + P/3

Now let's solve this for P.

9ft - 2 ft = P/3 - P/10

7ft = P( 1/3 - 1/10) = P*( 10/30 - 3/30) = P*(7/30)

(30/7)*7ft = P = 30ft.

The perimeter is 30ft.

5 0
3 years ago
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