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marin [14]
2 years ago
14

In 1986​, the cost of tuition at a certain private high school was​ $4580. By 1989​, it had risen approximately 39​%. What was t

he approximate cost in 1989​?
Mathematics
2 answers:
Ray Of Light [21]2 years ago
8 0
The first cost = $ 4580
Percentage of increase = 4580 ×39/100
= 458 ×39/10
= 458 ×3.9 = 1786.2
now you will add them
4580 + 1786.2 = $6366.2
RSB [31]2 years ago
4 0
$4580.00*(1.39)=
$6366.20
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2 years ago
7x² + 6x - 1<br> Algebra 3|factoring
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Answer:

(7 x - 1) (x + 1)

Step-by-step explanation:

Factor the following:

7 x^2 + 6 x - 1

Factor the quadratic 7 x^2 + 6 x - 1. The coefficient of x^2 is 7 and the constant term is -1. The product of 7 and -1 is -7. The factors of -7 which sum to 6 are -1 and 7. So 7 x^2 + 6 x - 1 = 7 x^2 + 7 x - x - 1 = (7 x - 1) + x (7 x - 1):

(7 x - 1) + x (7 x - 1)

Factor 7 x - 1 from (7 x - 1) + x (7 x - 1):

Answer: (7 x - 1) (x + 1)

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3 years ago
Malik deposited 1050 in a savings account and it earned 241.50 in simple interest after four years. Find the interest after four
kap26 [50]

Answer:

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