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4 years ago

Please Help!

1 answer:

5 0

A: Solve for r:
6 r + 6 r - 1 = 11

Grouping like terms, 6 r + 6 r - 1 = (6 r + 6 r) - 1:
(6 r + 6 r) - 1 = 11
6 r + 6 r = 12 r:
12 r - 1 = 11

Add 1 to both sides:
12 r + (1 - 1) = 1 + 11

1 - 1 = 0:
12 r = 11 + 1

11 + 1 = 12:
12 r = 12

Divide both sides of 12 r = 12 by 12:
(12 r)/12 = 12/12

12/12 = 1:
r = 12/12
12/12 = 1:
Answer: r = 1

__________________________________________________________
B:
Solve for v:
8 = 8 v - 4 (v + 8)

-4 (v + 8) = -4 v - 32:
8 = 8 v + -4 v - 32

Grouping like terms, 8 v - 4 v - 32 = (8 v - 4 v) - 32:
8 = (8 v - 4 v) - 32

8 v - 4 v = 4 v:
8 = 4 v - 32

8 = 4 v - 32 is equivalent to 4 v - 32 = 8:
4 v - 32 = 8

Add 32 to both sides:
4 v + (32 - 32) = 32 + 8

32 - 32 = 0:
4 v = 8 + 32

8 + 32 = 40:
4 v = 40

Divide both sides of 4 v = 40 by 4:
(4 v)/4 = 40/4

4/4 = 1:
v = 40/4

The gcd of 40 and 4 is 4, so 40/4 = (4×10)/(4×1) = 4/4×10 = 10:
Answer: v = 10

__________________________________________________________
C: x+4/3=2
x=(2-4)/3
x=(6/3)-4/3
x=(6-4)/3
x=2/3

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Step-by-step explanation:

An inequality is an inequality between letters (unknowns) and numbers related by arithmetic operations. Its solution set is the set of real numbers that satisfy it. In other words, an algebraic inequality in which its members are linked by the signs <(less than), ≤ (less than or equal to),> (greater than) or ≥ (greater than or equal to) is called an inequality.

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In this case, you know that Carmen wants to buy 2 pairs of sneakers that cost $ 100 each.So the 2 pairs of sneakers will cost Carmen:

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