Answer: 5
Step-by-step explanation:
a^2 + b^2 = c^2
12^2 + x^2 = 13^2
144 + x^2 = 169
x^2 = 25
square root both sides
x = 5
to check, do 12^2 + 5^2 =169
sqrt of 169 is 13
hope this helps
Trick question. See these negative signs? The left number is -9.375, and the right number is -0.8068181818181818... Notice that even though the right number looks like a smaller answer, it is closer to 0 on a number line, because it is negative. -71/88 is the correct answer.
Answer:
AB = 1.5
BC = 0
CD = 1.5
AD = 0
Step-by-step explanation:
Sample Answer for Plato
(9x^2-4)..........................
There are 45 numbers out of which 5 numbers are required to win an enormous sum of money
No of ways in which 5 numbers can be selected out of 45 numbers.

out of which there is only combination foe contest winning

When 100 different tickets are bought then
Probability of winning: 
Probably of winning≈0,000082
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P.S. Hello from Russia :^)