Answer:
Solution given:
r=3km
area of sector bounded by a 90° arc=90°/360°*πr²
=¼*π*3²
=<u>9/4 π or 7.068km²</u>
is a required answer
To find the value of a variable you must know the basics of pre-Algebra.
Example:
2x+9=39
To find he answer of this you must subtract 9 from both sides
Then you are left with…
2x=30
Since 2x=30 means 2 times x equals 30
You can divide 2 from both sides to find the answer
Which is…
x=15
Joyce and Tina had an equal amount of money
Lets x = # of days they spent money
Joyce spent $24 still had $64 left = 24x + 64
Tina spent $28 a day and spent all her money, no left = 28x
Both has equal amount of money so
28x = 24x + 64
Subtract 24x from both sides
4x = 64
Divide both sides by 4
x = 16
Answer:
Tina spent all her money in 16 days.
Answer:
Step-by-step explanation:
points that lie on an axis do not lie in any quadrant.
So point A lies in the positive x-axis
The origin (0,0) does't lie on any quadrant.
Origin is the point that lies on both x-axis and y-axis
I'll use subscript notation for brevity, i.e.
3.
By the chain rule,
4.
By the chain rule,
