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
Answer:
C
Step-by-step explanation:
First of all their is an easier way solving this 2l/ + l^2
but how you need it is c because the base is 100 and each face is 40 how 10x8=80 80/2=40
Answer:
Let the length of shorter piece be x ft.
so '' '' '' '' '' '' = 2 x + 3
A/Q, x + 2 x + 3 = 27
3 x = 24
x = 8
Length of shorter piece = x = 8 ft.
'' '' longer '' = 2 x + 3 = 16 +3 = 19 ft.
Step-by-step explanation:
let x and y be the length of the longer and the shorter pieces of the hose respectively.
By question,
x + y = 27 --- (1)
and,
x - 2y = 3 --- (2)
subtracting (1) by (2), we get,
y-(-2y) = 27-3
=> 3y = 24
=> y = 24/3
=> y = 8
putting y = 8 in (1)
x + 8 = 27
=> x = 27-8
=> x = 19
Therefore, the length of the shorter piece is 8 ft and the length of the longer piece is 19 ft