Astone that starts at rest free falls for 7.0 s. how far does the stone fall in this time?
a.
+2.4 x 102 m
c.
+3.4 x 101 m
b.
-3.4 x 101 m
d.
-2.4 x 102 m

Gravity = 9.8 m/s^2 ( because we are figuring the distance an object fell, gravity becomes a negative value so use -9.8).

Using the distance formula:

Distance = 1/2 x -9.8 x 7^2

Distance = -240.1

Written in scientific notation = -2.4 x 10^2

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions