Part A:
Given that forty percent of the players on a soccer team are experienced players.
Then, the o<span>riginal ratio of experienced to total players is given by 40/100 = 4/10
Part B:
Given that t</span><span>he expression

represents the percent of experienced players on the team after the coach adds x experienced players.
Then, the </span>f<span>inal ratio of experienced to total players is given by:

Part C:
Given that </span>t<span>here are 10 players on the team now, and that </span><span>the coach adds x experienced player, then the number of players on the team now is given by:
10 + x.</span>
Answer:
∠a = 10°
Step-by-step explanation:
The measure of ∠a = x
The measure of ∠b = 4x-30
It is also mentioned that the measure a and measure b are vertical angles. We need to find the value of a.
For vertically opposite angles,
∠a = ∠b
x = 4x-30
or
4x-30=x
Taking like terms together,
4x-x= 30
3x = 30
x = 10
So, the meausre of ∠a is equal to 10°.
Answer: 
Step-by-step explanation:
A line that cuts a circle at two points is called "secant".
There is a theorem known as "Intersecting Secant Theorem". This is the theorem you need to use to find the value of "d".
According the Intersecting Secant Theorem:

Having this expression, the next step is to solve for "d":
Use Distributive property:

Subtract 256 from both sides:


Divide both sides by 16:

The value of "d" rounded to the nearest tenth is:

Now the formula for the area of a circle is: πr². So we take 3 and just put it into the equation. π·3²=28.27. This is the area of the circle. Now the rate of change I think would just be the difference between the radius and the area of the circle so 28.27-3=25.27.
Answer:
solve what? the picture is not loading...
Step-by-step explanation:
I am so sorry I really want to help