Answer:
Step-by-step explanation: letter B is the right answer
Answer:
after 11.07secs
Step-by-step explanation:
Given the height of an object modeled by the equation
H = 16T² - 1960
The height of the object on the surface of water is zero, hence H = 0
Substitute
0 =16T² - 1960
Swap
16T² - 1960 = 0
16T² = 1960
T² = 1960/16
T² = 122.5
T = 11.07
Hence the rock will hit the surface of the water after 11.07secs
Answer
36 pies
Step-by-step explanation:
to find out how much one pie costs we divide the profit made by the number of pies sold, or p/n = cost of 1 pie
from this we can conclude that 1 pie = $4
to find how many pies were sold we just plug back into the equation
so: $144/n = $4 and from this we get 36 pies
The answer would be 32,000.
20% of 90 is 18
Explanation - 90 divided my 20 = 4.5 times 4 because 20 is 1/4 of 100
