Answer:
ALL of the above
Step-by-step explanation:
I'm very positive this is right
on second thought...
Answer:
C. (3, -3)
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define systems</u>
7x + 3y = 12
7x - 3y = 30
<u>Step 2: Solve for </u><em><u>x</u></em>
- Eliminate <em>y</em>: 14x = 42
- Isolate <em>x</em>: x = 3
<u>Step 3: Solve for </u><em><u>y</u></em>
- Substitute in <em>x</em>: 7(3) + 3y = 12
- Multiply: 21 + 3y = 12
- Isolate <em>y</em> term: 3y = -9
- Isolate <em>y</em>: y = -3
And we have our final answer!
Answer:
c= 25+0.05m
Step-by-step explanation:
Given that,
The phone company charges a flat rate of $25 per month. In addition they charge $0.05 for each minute of service.
$25 is fixed here and charge $0.05 for each minute of service.
We need to find the equation that can be used to find the monthly charge based upon the number of minutes (m) of service each month.
c= 25+0.05m
Hence, this is the required equation.
25% means 0.25 (It also means 1/4.)
50% means 0.5 (It also means 1/2.)
0.25 of 30.44 = 7.61
0.5 of 13.50 = 6.75
From 7.61, subtract 6.75.
OK. I did it. The question just says "do it". It doesn't ask us what the result is.
If anybody asks you, you can do the subtraction, or just tell them it's 0.86 .
(Is that 86 pence?)
Answer:
4ft
Step-by-step explanation: