The answer:
2 (3x+6) + 2 (2x+4)=94
6x+12+4x+8=94
10x+20=94
10x=74
X=74/10
X=37/5
Answer:
x = -6
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>
</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
2(3x + 4) - 3(x - 1) = x - 1
<u>Step 2: Solve for </u><em><u>x</u></em>
- [Distributive Property] Distribute: 6x + 8 - 3x + 3 = x - 1
- Combine like terms: 3x + 11 = x - 1
- [Subtraction Property of Equality] Subtract <em>x</em> on both sides: 2x + 11 = -1
- [Subtraction Property of Equality] Subtract 11 on both sides: 2x = -12
- [Division Property of Equality] Divide 2 on both sides: x = -6
6 - 34 + 96 - 384 +...
a 1 = 6 , a 2 = a 1 * ( - 4 ) , a 3 = a 2 * ( - 4 ), a 4 = a 3 * ( - 4)...
a 5 = - 384 * ( - 4 ) = 1,536
a 6 = 1536 * ( - 4 ) = - 6,144
a 7 = - 6,144 * ( - 4 ) = 24,576
This is a sum of a geometric sequence:
S 7 = 6 - 24 + 96 - 384 + 1,536 - 6,144 + 24,576 = 19,662
Another way to solve this:
S 7 = a 1 * ( r^n - 1) / ( r - 1 ) = 6 * (( - 4) ^7 - 1 )/ (- 4 - 1)=
= 6 * (-16,385) / (-5 ) = 19,662
Answer:
(a, a+b).
Step-by-step explanation:
Midpoint = [(a+2b + a-2b)/2 ], [b-a + 3a+b]/2
= (2a/2, (2a+2b)/2
= (a, a+b).
Answer:
18.75 PLEASE GIVE BRAINLIEST
Step-by-step explanation:
8 hours = 30 gallons
30 ÷ 8 = 3.75 gallons of water used per hour
3.75 x 7 = 26.25 gallons used in 7 hours
45 - 26.25 = 18.75 gallons left after 7 hours