For the vertical motion model h(t) = -16t^2 +54 + 3. identify the maximum height reached by an object and the amount of time the object is in the air
before it hits the ground. Round to the nearest tenth.
PLEASE HEL

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90

Can someone me and explain..will award brainlest!