A family wants to buy an awning for a French window that will be long enough
to keep out the sun when it is at its highest
point in the sky. The height of the French
window is 2.80 m. The angle of elevation
of the sun from this point to the bottom of
the window is 70°. The awning will be 90°
to the window. Find how long the awning
should be. Write down your answer correct
to 2 dp.

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: its the third option.

step-by-step explanation:

i just took the test.

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.