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2 years ago

The television cost $289.90. The sales-tax rate was 8%. How much was the sales tax on television.

1 answer:

4 0

You need to find what 8% of 289.9 is. To find this, multiply .08 by 289.9 = 23.192.
Because you are using money, round to the nearest hundredth and your tax is $23.19.
Hope that was helpful:)
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Find the logarithmic function y = logbx that passes through the points

katovenus [111]

$b\in(0,\ 1)\ \cup\ (1,\ \infty)\\x > 0\\y\in\mathbb{R}\\--------------------------\\\\y=\log_bx\\\\For\ (1,\ 0)\to x=1,\ y=0.\ Substitute:\\\\\log_b1=0\to b^0=1\to b\in(0,\ 1)\ \cup\ (1,\ \infty)\\\\For\ (116,\ 2)\to x=116,\ y=2.\ Substitute:\\\\\log_b116=2\to b^2=116\to b=\sqrt{116}\\\to b=\sqrt{4\cdot29}\to b=\sqrt4\cdot\sqrt{29}\to b=2\sqrt{29}\\\\For\ (4,\ -1)\to x=4,\ y=-1.\ Substitute:\\\\\log_b4=-1\to b^{-1}=4\to b=\dfrac{1}{4}$

Different values of b.

<h3>Answer: There is no logarithmic function whose graph goes through given points.</h3><h3 />

Maybe the second point is $\left(\dfrac{1}{16},\ 2\right)$

Substitute:

$\log_b\dfrac{1}{16}=2\to b^2=\dfrac{1}{16}\to b=\sqrt{\dfrac{1}{16}}\to b=\dfrac{1}{4}$

<h3>Then we have the answer:</h3>

$\boxed{y=\log_{\frac{1}{4}}x}$

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3 years ago

What is the percent increase in between 16 and 20

MrMuchimi

Your answer is 25% because a change from 16 to 20 represents a positive change (increase) of 25%

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2 years ago

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The equation V(t) = 12,000(0.75)^t represents the value of a motorcycle

user100 [1]

Answer:

(2) The motorcycle cost $12,000 when purchased.

Step-by-step explanation:

In the standard exponential equation, y = ab^x, a is the original value.

Since the equation is V(t) = 12,000(0.75)^t, a is 12,000.

This means that the original value was 12,000.

So, the motorcycle cost $12,000 when it was first purchased.

The correct answer is (2) The motorcycle cost $12,000 when purchased.

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2 years ago

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Lesechka [4]

Answer:

the answer is 46

Step-by-step explanation:

8 + 20 + 18 = 46

i hope this helps

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3 years ago

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The mean of Holly's first six math quiz scores was 75%. After taking the seventh quiz, her

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The total of her first six quizzes is 75*6 = 450

Let her seventh score be x
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Then, (450+x)/7 = 77
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3 years ago