Answer:
Step-by-step explanation:
The height of an object launched upward from ground level is given by the function s(t) = -4.9t² +7.8t
when the object reach the ground then s(t) = 0
So; -4.9t² +7.8t = 0
-4.9t² +7.8t + 0 = 0
By using the quadratic equation
where; a = -4.9 ; b = 7.8 and c = 0
=0 OR 1.592
<h3>Hence; the distance of the object before it hits the ground after launch is t = 1.592 seconds</h3>
Is it is hard to see the pic
Answer:
24
Step-by-step explanation:
They are similar so the difference between them can be used to find x. 7 is 1/2 of 14 and so 12 has to be 1/2 of x, so 12 times 2 is 24. x=24
Answer:
The relation between x and y is
Step-by-step explanation:
Given that,
The value of y varies directly as the square of x.
where r is constant of proportional.
Given that,
y= 27 and x=9
Plug y= 27 and x=9 in above relation
The relation between x and y is
Answer:
110
Step-by-step explanation:
To solve first find the measurement of the angles inside the triangle. The angle across from the 60-degree angle is also 60 degrees because the two angles are vertical.
Then you can find the missing angle in the triangle by subtracting 50 and 60 from 180 because all triangles equal 180 degrees. This means y=180-(50+60); therefore, y=70.
Finally, you can x because the 70-degree angle is complementary to x. This means when they are added they will equal 180. So to solve do x=180-70, which equals 110. Therefore, x=110.