Solve for X

x=???

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In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?