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klemol [59]
3 years ago
15

State whether 7 - V2 is rational or irrational. ENTER Rational or Irrational

Mathematics
2 answers:
Tanya [424]3 years ago
7 0
It’s irrational! i cant explain cause i’m terrible at it but i hope this helps :)
Veseljchak [2.6K]3 years ago
5 0

Answer:

Irrational

Step-by-step explanation:

7 is rational and SQRT(2) is irrational and the sum or difference of a rational and an irrational number is always irrational.

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What is 15/50 written in percent
vlada-n [284]
15/50 = 30/100
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15/50 = 30%
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3 years ago
Barbara claims that her horse can do simple addition problems. She showed her horse eight different cards with simple addition p
Arturiano [62]

Answer:

Barbara's horse can add

Step-by-step explanation:

To test if the horse could add, Eric he tried to calculate experimentally the probability that the horse had guessed the 8 answers.



If we call "trial" the action of throwing 8 coins and count the number of tails obtained, then eric made 53 trials.


During each trial, 8 events could have occurred:


Get 1, 2, 3, 4, 5, 6, 7 or 8 tails.


The plot of points obtained by Eric shows the frequency in which each of these 8 events occurred during the 53 trials.


The fact that the point diagram shows only one point on event 8, means that it occurred only once during the 53 trials, and compared to the other 7 events, this was the one with a lower frequency (the one that obtained the the highest frequency was the 4-tailed one, with 11 points).


This means that it is very unlikely to get 8 queues when casting 8 coins.


Therefore it also means that it is unlikely that Barbara's horse has guessed the 8 answers.

So, curiously, Barbara's horse maybe knows how to add

6 0
3 years ago
Read 2 more answers
What is the answer to 3c=-21?
Anna71 [15]
First, you need to get the variable by itself.
Divide three by both side.
c = -7
Brainliest answer? :)
7 0
3 years ago
Martha has two pet poodles. Fifi, her standard poodle, weighs 7 times as much as Buttercup, her toy poodle.
maksim [4K]

Answer:

i dont know it srry

Step-by-step explanation:

5 0
3 years ago
You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How many milligrams
valentina_108 [34]

Answer:

 43.16 mg

Step-by-step explanation:

After each hour, the amount remaining is 100% - 12% = 0.88 times the amount present at the beginning of the hour. Then after 8 hours, the amount remaining will be the initial amount multiplied by 0.88 eight times, or ...

  (120 mg)·(0.88^8) ≈ 43.1561 mg ≈ 43.16 mg

_____

Of course, an exponent is used to signify repeated multiplication. You can actually do the multiplication if you like, but most scientific and graphing calculators handle exponentiation easily.

8 0
3 years ago
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