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Irina18 [472]
3 years ago
6

Solve 3(x-4)=-5 for x. Justify each step

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
4 0
3x - 12 = -5 plus 12
3x-12 +12 = -5+12
3x = 7 devision by 3
3x/3 = 7/3
x= 2,3333333333 =~ 2,3
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Plz help..................
Misha Larkins [42]
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Due at 11:59 PLS HELP
Lelechka [254]
The answer is the last one
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3 years ago
Which is another way to check the sum of 104+34+228+877?
Alex787 [66]
The answer is digit sum method.

Digit sum method is method used to check the sum of sum numbers. If the sum of all of the digits of numbers is equal to the sum of all of the digits of the total sum, then the arithmetic process was correct.

We need to check the sum of <span>104+34+228+877:
</span>104 + 34 + 228 + 877 = 1243

Let's first summarize the digits of individual numbers:
104 *** 1 + 0 + 4 = 5
34 *** 3 + 4 = 7
228 *** 2 + 2 + 8 = 12 *** 1 + 2 = 3
877 *** 8 + 7 + 7 = 22 *** 2 + 2 = 4

Now, let's sum these sums:
5 + 7 + 3 + 4 = 19 *** 1 + 9 = 10 *** 1 + 0 = <u><em>1</em></u>

Then, let's summarize the digits of the total sum:
1243 *** 1 + 2 + 4 + 3 = 10 *** 1 + 0 = <u><em>1</em></u>

Since the sums of the digits on the both sides of equation is 1, than the arithmetic process was correct and the sum of <span>104 + 34 + 228 + 877 is really 1243.</span>

7 0
3 years ago
How to convert 70 metres to killometres
deff fn [24]

Answer:

from meters to kilometres  divivde 1000 so 70 divide 0.07 kilometres

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Car is traveling 40 mph how long will it take to go190mile
antiseptic1488 [7]

Answer:

3.5 HOURS

if he is 40 mph he goes 40 miles in 1 hour so it will take 3 1/2 hours to go 190 miles

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3 years ago
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