Frederick evaluates the numerical expression [(53.7 + 37.2) - (3 3 + 3.8)] - 8.6 and records the answer as 51.5. Lana evaluates the numerical expression 53.7 + 37.2 - 3 3 + 3.8 - 8.6 and records the answer as 59.1. The expressions have the same numbers and operations. Explain how Frederick and Lana can both be correct. answer this to prove your worth

Both people can be correct because of a little something called PEMDAS or the OOO (order of operations). In the first problem, the equation includes brackets and parentheses, doing 53.7+37.2 THEN 33+3.8 THEN subtracting them THEN subtracting 8.6 from that number, instead of doing 53.7+37.2 THEN subtracting 33 THEN adding 3.8 THEN subtracting 8.6. Doing certain parts of the equation first, dicated by the parentheses/brackets/braces, can change the final answer. The second expression has you going in order one by one, while the first has you doing groups of the equation at a time (neither are wrong or bad).

blue marble is 15 times out of 50 = 15/50 reduces to 3/10

landing on tails is 24 out of 50 = 24/50 reduces to 12/25

to find the probability of both multiply together:

3/10 x 12/25 = 3 x 12 / 10 x 25 = 36/250

if you multiplied the numerator and denominator by 10 you get 360/2500.

the answer is 360/2500

answer: two five pound bags one two pound

step-by-step explanation: