Answer:
D
Step-by-step explanation:
i hope you uderstand stand why it D
rounding to the nearest tenth will be 20
Answer:
To write 8000 miles in scientific notation, first find a natural number between 1 and 10. (8)
Now, figure out how many decimal places we have to move to the left.
8000.0 --> 8.0000 (Three
)
Now, write the number 8 multiplied by 10 to the third power.
( 8 × 10^3 miles )
Step-by-step explanation:
Answer:
0.9043secs and 0.3456secs
Step-by-step explanation:
Given the height of an overhand volleyball modeled as h=-16t^2+20t+6.
If the height is 11feet, then;
11 = -16t^2+20t+6.
-16t^2+20t+6 - 11 = 0
-16t^2+20t-5 = 0
Multiply thriugh by -1
16t^2-20t+5 = 0
Factorize
t = 20±√20²-4(16)(5)/2(16)
t = 20 ±√400-320/32
t = 20 ±√80/32
t = 20 ±4√5/32
t = 20±8.94/32
t = 28.94/32 and 11.06/32
t = 0.9043 and 0.3456
Hence the required time are 0.9043secs and 0.3456secs
