less than an hourStep-by-step explanation:
Answer:
x=7 so there is one solution
Step-by-step explanation:
5x-(7x-1)=-3x+8
Distribute the minus sign
5x -7x +1 = -3x+8
Combine like terms
-2x +1 = -3x+8
Add 3x to each side
-2x+3x+1 = -3x+3x+8
x+1 = 8
Subtract 1 from each side
x+1-1=8-1
x=7
We set up an equation: ?/43 -87= -75
⇒ ?/43= -75+ 87
⇒ ?/43= 12
⇒ ?= 12*43
⇒ ?= 516
The unknown number is 516~
Answer:
The price of each hamburger is $5 and the price of each drink is $3.
Step-by-step explanation:
- x --> the price of each hamburger
- y --> the price of each drink
- 8x+4y=52
- 5x+7y=46
- Solve system of equations
- The intersection is (3,5)
Answer:
A. 6
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>
4² - (x + 8)
x = 2
<u>Step 2: Simplify</u>
- Evaluate exponents: 16 - (x + 8)
- Distribute negative: 16 - x - 8
- Combine like terms: 8 - x
<u>Step 3: Evaluate</u>
- Substitute in <em>x</em>: 8 - 2
- Subtract: 6
