The answer is A hope this helps
Answer:
im pretty sure its 777 hope this helped:)
It’s 15, 21, 28 because it’s going up 1,2,3 etc and adding one each time it goes up
Answer:
0.448 seconds
Step-by-step explanation:
d = -16t² -4t + 412
find t when d = 407
substituting d = 407 into the equation:
407 = -16t² -4t + 412 (subtract 407 from both sides)
-16t² -4t + 412 - 407 = 0
-16t² -4t + 5 = 0 (multiply both sides by -1)
16t² + 4t - 5 = 0
solving using your method of choice (i.e completing the square or using the quadratic equation), you will end up with
t = (-1/8) (1 + √21)= -0.70 seconds (not possible because time cannot be negative)
or
t = (-1/8) (1 -√21) = 0.448 seconds (answer)
-2/3 ÷ 1/3
=(-2 × 3) / (1 × 3)
= -6/3
= -2/1
<span>= -2</span>
