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faltersainse [42]
3 years ago
15

Can somebody please help I really appreciate it. I have 1 hour to turn in

Mathematics
1 answer:
Karolina [17]3 years ago
4 0

Answer:

question 5's answer is B

Step-by-step explanation:

y=ax-b

+b

y+b=ax

/a

y+b/a=x

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A student's grade depends on her score on four equally-weighted exams. Her average on the first three exams is 92. What must she
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3x92 = 276 (first 3 exams)
average of at least 90 (90 x 4 = 360)

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Answer
<span>she needs to score at least 84 on the fourth exam </span><span>in order to guarantee a final average of at least 90</span>
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If 8^{y}=18^{y+2} what is the value of y?
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4 years ago
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You received your first credit card with a spending limit of $2,000 at 18.9% interest. You decide you need to upgrade your sound
kari74 [83]

Answer:

It will take approximately 25 months

Step-by-step explanation:

The amount owed on the credit card statement, P = $2,000

The interest rate of the credit on the credit card, r = 18.9%

The minimum monthly payment made, M = $100

The equal monthly installment formula is given as follows;

M = \dfrac{P \cdot \left(\dfrac{r}{12} \right) \cdot \left(1+\dfrac{r}{12} \right)^n }{\left(1+\dfrac{r}{12} \right)^n - 1}

Therefore, we get;

100 = \dfrac{2,000 \cdot \left(\dfrac{0.189}{12} \right) \cdot \left(1+\dfrac{0.189}{12} \right)^n }{\left(1+\dfrac{0.189}{12} \right)^n - 1} = \dfrac{2,000 \times\left(0.01575 \right) \cdot \left(1.01575 \right)^n }{\left(1.01575\right)^n - 1}

100×1.01575ⁿ - 100 = 31.50×1.01575ⁿ

100×1.01575ⁿ - 31.50×1.01575ⁿ = 100

68.5×1.01575ⁿ = 100

1.01575ⁿ = 100/68.5

n = ln(100/68.5)/ln(1.01575) ≈ 24.21 (which is approximately 25 months, by rounding up to the nearest whole number)

Therefore, it will take approximately 25 months to pay off the credit card debt

8 0
3 years ago
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