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Brums [2.3K]
3 years ago
14

Please help will mark brainliest need all 3

Mathematics
1 answer:
sergeinik [125]3 years ago
6 0

1.  875.45 - 25=  ( i am assuming they pay the minimum balance)

850.45

850.45 *.024=20.41

850.45+20.41=870.86

2.  89-15=74  assuming they pay the minimum balance

74*.019 =1.41

74+1.41=75.41


3.  If they made a 15% deposit, the still owe (100-15) 85 percent

335* .85 = 284.75

He owes $284.75

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Find the inverse of the following function​
KatRina [158]

f-¹(x)=\frac{2-7x}{x+2}

Answer:

Solution given:

f(x)=\frac{-2x+2}{x+7}

Let f(x)=y

y=\frac{-2x+2}{x+7}

Interchanging role of x and y

x=\frac{-2y+2}{y+7}

doing crisscrossed multiplication

x(y+7)=-2y+2

now solve it:

xy+7x=-2y+2

keep like terms in one side

xy+2y=2-7x

take common

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make a value of y

y=\frac{2-7x}{x+2}

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f-¹(x)=\frac{2-7x}{x+2}

3 0
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2000 people are selected randomly from a certain population and it is found that 389 people in the sample are over 6 feet tall.
Airida [17]

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Step-by-step explanation:

given data:

population = 2000 people.

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Solution:

the point estimate of people over 6feet tall

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the point estimate of people over 6 feet tall is 0.195

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