Mei releases a lantern for the Lantern Festival. She stands in a field that is 0.5 m belo sea level. The lantern rises 913.9 m. Then the candle in the lantern goes out. The lantern comes down 925.2 m to land on the surface of a lake. What is the elevation o the lake relative to sea level?

The lake is 11.3 m below sea level.

Step-by-step explanation:

Mei's initial position on the field was 0.5 m below sea level.

The lantern rises 913.9 m after its release.

The lantern descends 925.2 m to land on the surface of a lake.

Let the elevation of the lake to sea level be represented by x.

So that;

x = 913.9 - 925.2

  = -11.3

x = 11.3 m below sea level.

Therefore, the lake is 11.3 m below sea level.

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

step-by-step explanation: