Answer:
x = 3 or -3
Step-by-step explanation:
8 - x = 5 or 8 + x = 5
-x = -3 or x = -3
x = 3 or x = -3
Height:shadow=2.5:3
2.5/3=6.7/x
cross multiply aka times both sides by 3x
2.5x=20.1
divide both sides by 2.5
x=8.04
answer is 8.04ft
Answer:
bat kelangan mo pa hanapin yung value ng x? iniwan ka na nya diba?
The projectile has constant horizontal speed all the time and we can use this formula
x=Vax*t, where t is time it (projectile) takes to reach x=1000m
t=x/Vax=1000/50=20s
As we know we can split projectile trajectory in two parts and the time for each part is equal. We can conclude that time t=20s belong to first part where projectile is going up.
Formula for this type of movement is y=Vay-(gt∧2)/2
If we take acceleration of gravity g=10m/s∧2
we get y=200*20-(10*20∧2)/2=4000-2000=2000m
But if I calculate time it takes the highest point I get
t=Vay/g=200/10=20s
The highest point for that time is
y= H=Vay∧2/2g=200∧2/2*10=40000/20=2000m
This happened because the projecile is fired from the edge of a cliff which is above the sea line.
Good luck!!!
63%
To express as a percentage divide 630 g by 1 Kg and multiply by 100%
note that 1 Kg = 1000 g ( units must be the same)
× 100% = 63%
