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Lapatulllka [165]

3 years ago

8

Lisa purchased a hat for $10, a purse for $20, and a book for $23. The sales tax rate was 7.2 percent. What was the total amount

she paid?

1 answer:

Mamont248 [21]3 years ago

7 0

$56.82 is the correct amount

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What is 250% turned in to a fraction or mixednumber

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It would be 250/1000 or 1/4

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Alik [6]

The answer would be 7

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3 years ago

I need help. Basically, I need to figure out the dependent and independent value of a function.

Rama09 [41]

Answer:

x = log(y/4)/log(1.0256)
your answer for y=12 is correct

Step-by-step explanation:

The question is asking you to solve ...

y = f(x)

for x. (In other words, find the inverse function.)

You already did this using a constant for y. Do the same thing with y instead of the constant.

y = 4(1.0256^x)

y/4 = 1.0256^x . . . . . . . divide by 4

log(y/4) = x·log(1.0256) . . . . . take logs

log(y/4)/log(1.0256) = x . . . . . divide by the coefficient of x

Now, you have a model for x in terms of y, which is what the question is asking for.

x = log(y/4)/log(1.0256) . . . . . . . exact expression

When y=12, this is ...

x = log(12/4)/log(1.0256) ≈ 43.46 . . . . weeks

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This is a linear equation in log(y), so can be written as such:

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3 years ago

What is the x intercept of the line 3x+2y-10=0

Vesna [10]

To find the x int, sub in 0 for y and solve for x
3x + 2y - 10 = 0
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3x - 10 = 0
3x = 10
x = 10/3.....so ur y int is 10/3 or (10/3,0)

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Kobotan [32]

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$AB = \sqrt{ ({3 - ( - 2)})^{2} + ({4 - 0})^{2} } \\$

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$AB = \sqrt{41}$

$AB = 6.403$

$AB = 6.4$

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3 years ago