Answer:
b=−5
Step-by-step explanation:
Subtract the numbers
b=2−7
b= −5
The <em>correct answer</em> is:
|w-20| ≤ 0.12.
Explanation:
We first find the average of the two ends of the inequality:
(19.88+20.12)/2 = 40/2 = 20
This will be the number subtracted from w in the inequality.
Now we find the difference between this value and the ends:
20-19.88 = 0.12
20.12 - 20 = 0.12
This will be what our absolute value inequality ends with; the "answer" part, so to speak.
Since this inequality is written in compact form, it must be an "and" inequality; this means the absolute value inequality must be a "less than or equal to."
This gives us
|w-20| ≤ 0.12
Answer:
29
Step-by-step explanation:
(7-5)^2 is 4 and (20-19)^2 is 1
4+1=5
3*5=15
15+14=29
Communitive Property of Addition
Answer:
(5, -8)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Distributive Property
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
- Terms/Coefficients
- Coordinates (x, y)
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
5x + 2y = 9
y = -x - 3
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>y</em>: 5x + 2(-x - 3) = 9
- [Distributive Property] Distribute 2: 5x - 2x - 6 = 9
- Combine like terms: 3x - 6 = 9
- [Addition Property of Equality] Add 6 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 = -x - 3
- Substitute in <em>x</em>: y = -5 - 3
- Subtract: y = -8