In the Dorben Company, an industrial engineer(IE) methods in the press department to meet OSHA standards relative to permissible noise exposures. The IE found a time-weighted average sound level of 100 dBA. The 20 operators in this department wore earplugs provided by Dorben with an NRR value of 20 dB. What improvement resulted

answer: 414,377,008

step-by-step explanation:

just multiply it

3x + 4y -25 =0 represents the amount of change sianna should recieve

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!

1. perpendicular

2. parallel

3. perpendicular