1. which equation represents the linear graph? a) y = 2x - 4 b) y = 2x + 4 c) y = 4x - 2 d) y = 4x + 2

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4

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