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svetlana [45]
3 years ago
14

Find the sum of 0.2126 and 0.7145 correct to 3 significant figures​

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Answer:

0.927

Step-by-step explanation:

add then round the last digit (it doesnt matter if it is a decimal number or not).

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A circle has a ridius of 16 inches. If the radius is doubled, what is the area of the larger circle
Ostrovityanka [42]
Radius of larger circle = 32

Area of larger circle: 
  
   = π • r²
   = 3.14 • 32² 
   = 3.14 • 1024
   = 3,215.36

Answer : 3,215.36 in²
  
    
7 0
3 years ago
What is the mean for this list of numbers? 17, 19, 21, 23
Svetlanka [38]

Answer:

The mean is 20

Step-by-step explanation:

17+19+21+23=80

80 div 4 = 20

7 0
3 years ago
Read 2 more answers
You have 400 feet of fencing to enclose a rectangular plot. Find the length and width of the plot that will maximize the area. W
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Well, we can denote L and W for the length and width respectively. Lets say the A is the area, we have: 1. A=(L × W) as well as 2. 2(L+W)=400. We rearrange the second equation to get 3. W=200-L. From this, we can see that 0<L<200. Substitute the third equation into the first to get A=(200L-L²). put this formula into the scientific calculator and you will find a parabola with a maximum. That would be the maximum area of the enclosed area. Alternatively, we can say that L is between 0 and 200 when the area equals 0. (The graph you find will be  area against length). As the maximum is generally found halfway, we substitute 100 into the equation and we end up with 10000.

Hope this helps.
6 0
3 years ago
In a poll, 150 students were asked if they prefer camping or going to the beach during their summer vacations and their gender.
frosja888 [35]

Answer: Picture?

Step-by-step explanation:

6 0
3 years ago
Identify the savings options and the investment options. business ownership bonds money market account promotional CD
Bond [772]

Answer:

The given options are -

business ownership

bonds

money market account

promotional CD

Now we have to identify these under saving options or investment options.

So, saving are :

promotional CD and money market account ( money market account is a type of saving account that can pay higher interest rate than normal savings accounts, but these accounts have higher minimum deposits.)

And investment are :

business ownership and bonds.

8 0
4 years ago
Read 2 more answers
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