Answer:
t = 4 seconds
Step-by-step explanation:
The height of a soccer ball as a function of time is given by :
We need to find the time when the ball hit the ground i.e. h = 0
Put h = 0 in above equation. So,
It is a quadratic equation such that,
t = -1 s and t = 4 s
Neglecting -1 s, the ball will hit the ground after 4 seconds.
A parallelogram is a polygon with two sets of opposite, parallel sides.
A rhombus is a type of parallelogram with four congruent sides and angles but no right angles.
So, all rhombuses are parallelograms, but not all parallelograms are rhombuses.
Answer:
hj hjhvhvhjvhjhjvhjvhvhjv
Step-by-step explanation:
Answer:
40 days
Step-by-step explanation:
20 men = 30 boys can do the job so
10 men = 15 boys
30 boy hours = 36 days
30 * 36 = 1080 boy days
We have 10 men and 12 boys to do the job
We replace the 10 men with 15 boys
We have 15 boys and 12 boys for a total of 27 boys to do 1080 boy days worth of work
27 * day = 1080 boy days
days = 1080 /27
days = 40
