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il63 [147K]
2 years ago
9

Help???????????????????????

Mathematics
2 answers:
ElenaW [278]2 years ago
5 0
Answer: 3(2)*2+15/3 = 23
denis-greek [22]2 years ago
5 0

Answer:

23

Step-by-step explanation:

3^2 x 2 + 15 : 3

9 x 2 + 5

18 + 5 = 23

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Which is the simplest radical form of √52?
Zielflug [23.3K]
Short answer: 2 * sqrt(13)
Remark
There are a number of ways to look at this. I'll pick the easiest.

Step one
Factor 52 until there are no more prime factors to be used.

52 = 2 * 26
52 = 2 * 2 * 13. That's as far as you can go.

Rule
For every 2 equal prime factors, 1 of them can be taken out side of the root sign. The other one disappears.

sqrt(52) = sqrt(2*2* 13) = 2*sqrt(13)

Answer 2sqrt(13) <<<< answer
4 0
3 years ago
A runner is 6/8 mile from the finish line. If she can travel 3/8 mile per minute, how long will it take her to finish the race?
Klio2033 [76]

Answer:

it will take her 40 seconds to finish the race.

3/8 per minute, would make it 1/8 every 20 seconds. since she only has 2/8 of a mile left to go, 20 seconds +20 seconds = 40 seconds

(if you needed how long it takes her to run the whole race, it's 2 minutes 40 seconds, which would make her the fastest mile runner in the world)

Step-by-step explanation:

I hope this helps :)

6 0
3 years ago
Wich one does not belong , And why..?<br><br> veiw the image
puteri [66]

Answer:

2x+3

Step-by-step explanation:

the upper left, upper right, and lower right are all using distributive property. The lower left is not.

6 0
3 years ago
Find the distance covered in 10 revolution by a road roller of diameter 4.2m​
IceJOKER [234]
The distance is 131.9m.
3 0
2 years ago
Human civilization, at least since the time of ancient Egypt, is on the order of 5000 years old. The age of the Earth is on the
olchik [2.2K]
Write and solve an equation of ratios:

5 *10^9 years       100 m
------------------- = --------------
   5 * 10^3 yrs            x

Reducing the first fraction,
              
             100 m
10^6 = ----------
                 x
                                100 m
Solving for x,  x = ------------- = 10^(-4) m, or [10^(-1)] * [10^(-3))]
                                10^6
this comes out to one tenth of 1 millimeter.
5 0
3 years ago
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