NDure

The two triangles are similar (they both share two 90 degrees and a common angle NPO). Call the other triangle XPY since the two triangles are similar, the ratio of their sides is equal. XP/XY = PN/NO 40/24 = 50/NO NO = 30 Then by pythagoras, OP = √ NO^2 + NP^2 = √ 30^2 + 50^2 = √3400 = 10 √34

The weighted average will dip towards the mean with the higher weight, so in this case it's Club Q

1st height = √(30^2 -15^2) = 900 - 225 = √675 2nd height = √(30^2 - 18^2) = 24 n = √675 - 24 = 1.98

48 = 2^4 * 3 48 ^7= 2^28 3^7, so max for x is 28 for the fraction to be an integer.

lol @ brownberry he just saw which phone will have the greatest % change in which case is symbilan. % decrease = (new - old)/old = (1.8 - 26.8)/ 26.8 = 93% decrease rounded to the nearest percent

Let S be the set of all positive integers n such that n^2 is a multiple of both 24 and 108. Which of the following are divisors of every integer in S? select all that apply A) 12 B) 24 C) 36 D) 72

An online bank verifies customers’ ownership of external bank accounts by making both a small deposit and a small debit from each customer’s external account, and asking the customer to verify the amounts. In 70% of these exchanges, the deposit and debit are within two cents of one another (for example, a deposit of $0.18 and a debit of $0.16, or a deposit of $0.37 and a debit of $0.38), and the deposit and debit are always within five cents of one another. During one week, the online bank attempts to verify 6,000 accounts in this manner, but 0.5% of the transactions do not go through, and thus no money is transferred. What is the maximum amount, in dollars, that the account verification system could have cost the bank that week? A: (A) $165.30 (B) $173.40 © $174 (D) $256.71 (E) $258

The random variable X is normally distributed. The values 650 and 850 are the 60th and 90th percentiles of the distribution of X, respectively. A) The value at the 75th percentile of the distribution of X B) 750

P (A student or a girl) = P(A Student) + P (Girl) - P(A student and a girl) = 5/30 + 17/30 - 3/30 = 19/30

Nice question[ATTACH=CONFIG]6316[/ATTACH]

The length of one side of a triangle is 12. The length of another side is 18. Which of the following could be the perimeter of the triangle? Select all that apply A) 30 B) 36 C) 44 D) 48 E) 60

how to approach this one?

untill yesterday I didn't know that a square is a special type of a rectangle

A rectangle has a perimeter of 24. Which of the following could be its area in square units? Indicate all possible choices A) 28 B) 32 C) 35 D) 36 E) 40 OA the question is how come is an answer?

yep that's the trick