I got pretty much 5 stickers for each student. does it give you answers or do you have to fill in the answer?
Answer:
x = 4, y = -3
Step-by-step explanation:
{2x - y = 11
{x + 3y = -5
You can use the substitution method by solving for x in the second equation:
x + 3y = -5
Subtract 3y from both sides:
x = -3y - 5
Now, substitute this value for x into the first equation:
2x - y = 11
2(-3y - 5) - y = 11
Distribute:
-6y - 10 - y = 11
Add 10 to both sides:
-6y - y = 21
Combine like terms:
-7y = 21
Divide both sides by -7:
<u>y = -3</u>
Next, substitute this value for x into the second equation:
x + 3y = -5
x + 3(-3) = -5
Multiply:
x - 9 = -5
Add 9 to both sides:
<u>x = 4</u>
Given :
- The radii of the circular paths are 210 m. and 490 m.
To Find :
- The area of the region between two concentric circular paths.
Solution :
Area of the outer circle :
⠀
Area of the inner circle :
⠀
Therefore,
Area of the region inside the circular paths :
24/3 = 8
5 x 8 = a
5 x 8 = 40
a = 40
hope this helps
Answer: B. 1/5
Step-by-step explanation:
