13 ft is the right answer
The numbers of pears and apples bought are 16 and 20 respectively
let
x = number of pears
y = number of apples
He bought 4 more apples than pears. Therefore,
He bought a number of pears and apples and paid $128 for them. Therefore,
<h3>System of equation:</h3>
y - x = 4
4y + 3x = 128
Therefore,
3y - 3x = 12
4y + 3x = 128
7y = 140
y = 140 / 7
y = 20
Therefore,
20 = x + 4
x = 20 - 4
x = 16
learn more on algebra here: brainly.com/question/971162
Answer:
y= 0.5
Step-by-step explanation:
right on edg
x = -4, so use the first equation, x^2 = -4^2 = -16
x = 4, use 3rd equation, sqrt(x) = sqrt(4) = 2
Answer:
3 seconds
Step-by-step explanation:
Initial height = 144 feet
t = Time taken
The equation of the height from the ground is
The time taken to reach the ground is needed. Here the ground is taken as reference so 
So, time taken by the quarter to reach the ground is 3 seconds.
