Urgent! what is the measure of angle b? -78° -92° -102° -282°

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

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Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.