Answer:
Order of Operations ( PEMDAS)
First you do Parentheses
Second you do Exponents before Multiplying and stuff
Then you Multiply or divide before addition and subtraction
Step-by-step explanation:
Part 1) The equation of a circle is (x+4)²+(y−5)²<span>=121.
What is the center and radius of the circle?
we know that
the equation of a circle is of the form
(x-h)</span>²+(y-k)²=r²
in the problem
(x+4)²+(y−5)²=121.------> (x+4)²+(y−5)²=11²
the center (h,k) is the point (-4,5) and the radius is 11
Part 2) we have that
(x+15)²+(y−12)²=25-------> (x+15)²+(y−12)²=5²
we know that
<span>the greatest distance, in feet, a person could be from the lamp and be detected is the radius
</span>
the radius is equal to 5 ft
the answer Part 2) is 5 ft
Part 3) we have that
(x−9)²+(y+11)²=16--------> (x−9)²+(y+11)²=4²
the radius is equal to 4 m
so the diameter is ------> 4*2-----> 8 m
the answer Part 3) is
8 m
Answer:
Find the area of table top( circle)
A=πd²/4
A = 3.1415× (90cm)²/4
A= 3.1415× 8100cm²/4
A= 3.1415×2025
A=6361.5375cm²
The area of the table top is 6361.5375cm².
Hello!
1. 2=e-1
First, you switch sides.

Then, you add 1 from both sides of an equation.

Add by the numbers.

, is the correct answer.
_____________________________________________
2. r-3=1
First, you add by 3 both sides of an equation.

Add by the numbers.

, is the correct answer.
__________________________________________________
3. z-6.3=2.1
First, you add by 6.3 both sides of an equation.

Add by the numbers.

, is the correct answer.
____________________________________________________
4. t-9.25=5.5
First, you add by 9.25 both sides of an equation.

Simplify.

, is the correct answer.
____________________________________________________
5. k-32.9=16.5
First, you add 32.9 both sides of an equation

Add by the numbers.

, is the correct answer.
______________________________________________________
Hope this helps!
Have a nice day! :)
:D
-Charlie
Thank you!
Answer:
Step-by-step explanation: