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mr Goodwill [35]
3 years ago
13

Convert this rational number to its decimal form and round to the nearest thousandth "4/7

Mathematics
1 answer:
Lesechka [4]3 years ago
6 0

4 \div 7 = 0.57142857

nearest thousandths...

0.517

in decimals... we start in the tenths, hundredths then thousandths.
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7)Twice a number when decreased by 7 gives 45. Find the number.​
kirza4 [7]
Isn’t it 26... cuz 26x2 is 52 then subtract 7 which is 45
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How do u do -3 1/2•2 3/4​
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the answer is -77/8 or -9.625

Step-by-step explanation:

5 0
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Find the difference 5 1/3 - 3 2/3
ollegr [7]
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3 0
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Read 2 more answers
A car travelled at 50 km/hr for 3 hours How far did the car travel?
jasenka [17]

Answer:

25km

Step-by-step explanation:

50 km = x km

1 hr        3 hrs

From there, you cross-multiply and solve for x.

(50 km)*(3 hrs) = (x km)*(1 hr)

x km = (50)*(3)/(1) = 150km

Now, your other question can be answered the exact same way. 30 minutes is the same as 1/2 of an hour, so just put 0.5hrs in where the 3hrs was in the previous problem. So to show you how it works once more, here are your calculations:

50 km = x km

1 hr        0.5 hrs

(50 km)*(0.5 hrs) = (x km)*(1 hr)

x km = (50)*(0.5)/(1) = 25km

I hope that helps!

6 0
3 years ago
Solve for ;x+20/2=3x
Alchen [17]
<span>x in (-oo:+oo)

(x+20)/2 = 3*x // - 3*x

(x+20)/2-(3*x) = 0

(x+20)/2-3*x = 0

(x+20)/2+(-3*2*x)/2 = 0

x-3*2*x+20 = 0

20-5*x = 0

(20-5*x)/2 = 0

(20-5*x)/2 = 0 // * 2

20-5*x = 0

20-5*x = 0 // - 20

-5*x = -20 // : -5

x = -20/(-5)

x = 4 so x= 4</span>
4 0
3 years ago
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