Answer:
Switch justifications for step 2 and 3
Step-by-step explanation:
When x/2 = 7, Joe subtracted 3 on both sides, not multiply.
When x = 14, Joe multiplied by 2 on both sides, not subtracted.
Answer:
8-8-21
Step-by-step explanation:
I think that is the answer
Answer:
30
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
6² + x - x²
x = 3
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: 6² + 3 - 3²
- Exponents: 36 + 3 - 9
- Add: 39 - 9
- Subtract: 30
5) since (x-a)^2+(y-b)^2=r^2
plug in (-5,2) as (a,b) and r=3
Making the equation:
(x+5)^2+(y-2)^2=9
6) (x-0)^2+(y-0)^2=r^2
since we have (0,5)
0^2+5^2=r^2
Final equation: x^2+y^2=25
Answer:
700.39cm
Step-by-step explanation:
For a horizontal distance of 30cm, the drop is 1cm, now we need to get the drop for horizontal distance of 700 cm to maintain the same slope
Using the concept of cross multiplication
30cm=1 cm drop
700 cm=x
30x=700
X=700/30=70/3=23 ⅓
Utilizing pythagoras theorem, the length of pipe will be
L=√(23⅓)²+700²
L=700.38878092417 cm
Rounded off, the length is approximately 700.39 cm
