Answer:
(-5, -20)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
<u>Algebra I</u>
- Coordinates (x, y)
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define</u>
y = x - 15
y = 4x
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>y</em>: 4x = x - 15
- [Subtraction Property of Equality] Subtract <em>x</em> on both sides: 3x = -15
- [Division Property of Equality] Divide 3 on both sides: x = -5
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define original equation: y = 4x
- Substitute in <em>x</em>: y = 4(-5)
- Multiply: y = -20
Answer:
The price fell 40%
Step-by-step explanation:
34/85, then convert it to a percentage
Answer:
27.0000
Step-by-step explanation:
27.2163 rounded to the nearest hundredth is 27.0000 or 27 because the hundredth place held a 1 and 5 or above rounds up and 4 or below rounds down. The .2163 turned into zeros because the second number (the hundredths place) was a 1 so it rounded down, and hen it rounds down, all the numbers round to 0.
The standard form: Ax + By = C
y = 90 - 15x <em>add 15x to both sides</em>
<h3>15x + y = 90</h3>
First flip the second fraction
4/7 divided by 9/6
Next multiply 4 x 9 which is 36
Then multiply 7 x 6 which is 42
Then divide the fraction 36/42
Which since it's not even it would be in decimal form it would be 0.9
