Answer:
Step-by-step explanation:
Here you go mate
Use PEMDAS
Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction
Step 1
-9 =4-(2x+3) Equation/Question
Step 2
-9 =4-(2x+3) Remove parenthesis
-9=-2x+1
Step 3
-9=-2x+1 Subtract 1
-2x=-10
Step 4
-2x=-10 Divide by 2
answer
x=5
Hope this helps
A^2-b^2=(a+b)(a-b)
1: x^2-4=(x+2)(x-2)
2: (x+8)(x-8)
3: (x+10)(x-10)
4: (x+14)(x-14)
The upper quartile is 9
Lower quartile: 5
Median: 8
Upper quartile: 9
Answer: 21 dollars was his bill before the tip
Step-by-step explanation: 4.20 is 20% of what he paid with no tip included. This means you can set up an equation like this.
4.20 = .2x This means that $4.20 is (is means =) 20% of (of means multiply) x (which is the unknown factor).
