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Answer: 676
Step-by-step explanation:
The total number of letters in English alphabet {From A to Z} = 26
We assume that the repetition of letters is allowed.
If we fix H at the first position , then the number of ways to make three-letter strings that begin with H is given by :-
Hence, the number of ways to make three-letter strings that begin with H is 676.
I'm guessing that you know about 45-45-90 and 30-60-90 triangles.
In 45-45-90 triangles, the legs are in a ratio such that the hypotenuse is times the legs.
In 30-60-90 triangles, the legs are in a ratio of 1::2
In the picture given we have been given a value of the side of the 45-45-90 triangle. We can deduce that the value of the hypotenuse is 9 because of the ratio of the sides of a 45-45-90 triangle.
The 30-60-90 triangle shares the same hypotenuse, and so we now know a value of one of its sides as well. The ratio of the side of value 'x' and the hypotenuse is : 2
We can create an equation to solve for x using these ratios:
=
Cross multiply:
2x = 9
x =
Option C