In a right triangle the length of a hypotenuse is c and the length of one leg is a, and the length of the other leg is b, what is the value of b, if a=2 (root of)3 and c=2b

Use the Pythagorean Theorem.

c^2 = a^2 + b^2.  Thus, (2b)^2 = (2√3)^2 + b^2

Simplifying, we get:  4b^2 = 4(3) + b^2, or 3b^2 = 4(3).  Then b^2 = 4, and b = +2

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3