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trasher [3.6K]
3 years ago
11

Help me solve this equation: 5X+7X+6-26=29 Thanks! I'll give 20 pts.

Mathematics
2 answers:
Oxana [17]3 years ago
7 0

Answer:

1.3

Step-by-step explanation:

5x+7x+6-26=29

12x-20=29

12x=29-20

12x=9

x=1.3

stealth61 [152]3 years ago
5 0

Answer: x = 49/12

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

5x+7x+6−26=29

5x+7x+6+−26=29

(5x+7x)+(6+−26)=29(Combine Like Terms)

12x+−20=29

12x−20=29

Step 2: Add 20 to both sides.

12x−20+20=29+20

12x=49

Step 3: Divide both sides by 12.

12x/12 = 49/12

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I NEED HELP WITH THESE TWO QUESTIONS PLZ DO NOT ANSWER IF YOU CANNOT EXPLAIN THE ANSWER
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Answer:

  1. asymptotes: x=-6, x=6, y=0; zero: x=0

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Step-by-step explanation:

1. The vertical asymptotes are where the denominator is zero. It factors as (x-6)(x+6), so will have zeros at x=-6 and x=6.

The horizontal asymptote is at the limit when x goes to infinity. Here, the ratio of highest-degree terms is 6/x, so the value goes to zero as x gets large.

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In summary:

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__

2. 60% are red, so 40% are blue. The difference in percentages is 60%-40% = 20%. The percentage of blue fish (40%) is twice the difference (=2×20%), so the number of blue fish is twice the difference in numbers.

  blue fish = 2×10 = 20 fish

<em><u>Check</u></em>

There are then 20+10=30 red fish, so 20+30=50 fish total. Reds are 30/50 = 60% of the total.

<u><em>Additional comment</em></u>

I find it often works well to work with ratios, which I can often do in my head. Other folks like to see equations. Here, we could write equations like ...

  r = 60%(r + b) . . . . reds are 60% of the total

  r - b = 10 . . . . . . . . 10 more reds than blues

We want the value of b, so we can eliminate r by substituting for it:

  r = 10 + b . . . . from the second equation above

  (10 +b) = 0.60((10 +b) + b) . . . . substitute for r

  10 +b = 6 + 1.2b . . . simplify

  4 = 0.2b . . . . subtract b+6

  20 = b . . . . . . multiply by 5 (there are 20 blue fish)

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