Answer:
D. (1, -2)
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>
5x - 2y = 9
3x + 4y = -5
<u>Step 2: Rewrite systems</u>
10x - 4y = 18
3x + 4y = -5
<u>Step 3: Solve for </u><em><u>x</u></em>
- Add to equations together: 13x = 13
- Divide 13 on both sides: x = 1
<u>Step 4: Solve for </u><em><u>y</u></em>
- Define: 3x + 4y = -5
- Substitute in <em>x</em>: 3(1) + 4y = -5
- Multiply: 3 + 4y = -5
- Isolate <em>y </em>term: 4y = -8
- Isolate <em>y</em>: y = -2
And we have our final answer!
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Answer:
2n
Step-by-step explanation:
You pack sandwiches for a mountain hike with your friends.
Each [ meaning 1] sandwich takes 2 slices of bread.
If each hiker eats one sandwich, and there are 'n' hikers
Thus, to find the number of breads used for 'n' hikers, we multiplied 2 by n
Hence, the expression will be 2n
[CloudBreeze]
4.86 is the answer to you're question.
the value for f(5.3)=6×5.3
=31.8
Since 6/1.5 is 4. It increased 400%.
