Suppose that IQ scores have a bell-shaped distribution with a mean of 105 and a standard deviation of
15. Using the empirical rule, what percentage of IQ scores are less than
120? Please do not round your answer.

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

It says factor each expression 49x-28?

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given