Answer:
5.83
Step-by-step explanation:
i used pythagorean theorem
side a is 5 because congruence
side b would be 3 because 9 - 6 = 3
5^2 + 3^2 = c^2
25 + 9 = c^2
34 = c^2
sqrt of 34 is 5.83
15 ft = 15*12 = 180 inches
180/4 = 45
so the scale is 1/45
Answer:
$39.48 per gallon
Step-by-step explanation:
$39.48/16.8 = <u>2.35</u>
Answer:
(-5, 17)
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 + 3y = 26
-2y = 6x - 4
<u>Step 2: Rewrite systems</u>
5x + 3y = 26
y = 2 - 3x
<u>Step 3: Solve for </u><em><u>x</u></em>
- Substitute: 5x + 3(2 - 3x) = 26
- Distribute 3: 5x + 6 - 9x = 26
- Combine like terms: -4x + 6 = 26
- Subtract 6 on both sides: -4x = 20
- Divide -4 on both sides: x = -5
<u>Step 4: Solve for </u><em><u>y</u></em>
- Define: -2y = 6x - 4
- Substitute: -2y = 6(-5) - 4
- Multiply: -2y = -30 - 4
- Subtract: -2y = -34
- Isolate <em>y</em>: y = 17
And we have our final answer!
C is correct.
1. You do 12.99 times 3
2. $0.69 times 2
3. Add $2.99 to the two prices above
4. Add the $2.52 tax to the prices
And you should get around $45 and some change