An arch has the equation y=-2/81x^2+18. Find it’s maximum height

What is the measure of angle x? a.101 b.158 c.44 d.79

Find the value of x to the nearest tenth.

Will mark brainliest, , and rate to only chrislaurencelle clarissa made a scale drawing of a rectangle. she used a scale factor of 3 to draw the new rectangle. how does the length of the new rectangle compare to the original? the length of the new rectangle is 3 times shorter than the original. the length of the new rectangle is 12 times shorter than the original. the length of the new rectangle is 3 times longer than the original. the length of the new rectangle is 12 times longer than the original.