Answer:


Step-by-step explanation:
Given


Required
x and y
Add both equations to eliminate y


Divide both sides by 6

Substitute
in the first equation





Divide by -3

Answer:
199.8°
Step-by-step explanation:
The circle has radius r = 7 ft.
Now, the circumference of the circle is given by the formula C = 2πr
So,
ft.
Now, 44 ft arc length is equivalent to 360°
Hence, 24.42 ft arc length is equivalent to
degree.
Therefore, the central angle is 199.8° (Answer)
Answer:
In 30 minutes:
The minute hand moves a distance of 25.13 inches
In 20 minutes:
The minute hand moves a distance of 16.76 inches
Step-by-step explanation:
When 60 minutes are completed, the minute hand of the relog makes a complete revolution. The distance s that the minute hand travels when making a complete revolution is:
Where r is the radius of the circumference, and in this case, the radius of the minute hand.
So:

s = 50.27 inches.
In 30 minutes (which is half of 60) the minute hand covers only half a revolution. Then the distance traveled in 30 minutes is
inches
In 20 minutes (which is one third of 60) the minute hand only travels a third of a complete revolution. Then the distance traveled in 20 minutes is
inches
You want to find the percent change, so what you do is subtract the curretn price to the original price so , 3-2= which equals 1. once you get 1, you divide it by the original number to get the fraction representing the percent. so 1/2. when you divide 1 by 2 you get .5, to change it to a percent you move the decimal 2 times to the right or multiply by 100. so .5 turns to 50 and you add the percent sign, 50%.
Ok...let’s get started!
12 boys and 8 girls
That means that there are 20 kids!
12/20 is equal to 60%
There is a 60% chance that the first paper will be a boys
Please tell me if this is incorrect