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Vlad1618 [11]
4 years ago
8

75 - 3.5x - 4x = 4x + 6

Mathematics
2 answers:
stepladder [879]4 years ago
3 0

Answer:

x = 6

Step-by-step explanation:

Step 1: Write equation

75 - 3.5x - 4x = 4x + 6

Step 2: Solve for <em>x</em>

  1. Combine like terms: 75 - 7.5x = 4x + 6
  2. Add 7.5x on both sides: 75 = 11.5x + 6
  3. Subtract 6 on both sides: 69 = 11.5x
  4. Divide both sides by 11.5: 6 = x
  5. Rewrite x = 6

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

75 - 3.5(6) - 4(6) = 4(6) + 6

75 - 21 - 24 = 24 + 6

54 - 24 = 30

30 = 30

IRINA_888 [86]4 years ago
3 0

Answer:

x=6

Step-by-step explanation:

Isolate the varibles by dividing each side by factors that dont contain the varibles. Hope this helps.

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2 years ago
Suppose that $2000 is placed in a savings account at an annual rate of 4.6%, compounded quarterly. Assuming that no withdrawals
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Answer:

It will take 35.46 quarters for the account to grow to $3000.

Step-by-step explanation:

Since the annual rate is compounded quarterly, this can be calculated using the formula for calculating the future value as follows:

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Where;

FV = future value or the amount the deposit expected to grow to = $3,000

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Substituting the values into equation (1) and solve for n, we have:

$3,000 = $2,000 * (1 + 0.0115)^n

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0.176091259055681 = n * 0.00496588710682352

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Rounding to the nearest hundredth, which also implies to rounding to 2 decimal places, we have:

n = 35.46

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