Anita has soccer practice every day after school. On Friday, practice is only 1 hour. If she practices a total of 9 hours
each week, how long is practice on each of the other 4
days?
Write and solve an equation to answer the question, and then identify which
statement is not true.
O A. x represents the practice time on Monday, Tuesday, Wednesday,
and Thursday
O B. The equation is 4x + 1 = 9.
O c. The first step in solving the equation is to subtract 1 from both
sides of the equation.
O D. The solution is x = 3.

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s

- "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."

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

a 90 degree rotation across the the origin followed by a reflection across the x-axis.

step-by-step explanation: