Find the quotient if the dividend is 7.52 · 10^7 and the divisor is 0.00049. 1.534 · 10^11
3.684 · 10^3
6.516 · 10^11
1.534 · 10^3

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?