At a summer camp, there are 50 girls out of 80 campers. what is this ratio writtin as a fraction in simplest form?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?