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VARVARA [1.3K]
3 years ago
5

justin paid $1,185 in sales tax on her new car. The car cost $15,800 before taxes. What percent was the sales tax rate?

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
7 0

Answer:

The percentage is 7.5%

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The length of a rectangle is 15 ft greater than its width. If each dimension is decreased by 2 ft, the area will be decreased by
padilas [110]

Answer:

length = 35ft, width = 20ft

Step-by-step explanation:

We are working with length (L), width (W), and area (A). We are asked to find the 2 dimensions. The question tells us that L = W + 15, so we can express L in terms of W. However, we still don't know what A is. Since we have 2 unknowns, we somehow need to develop 2 equations to get a solvable system.

We can set up the first equation using the relationship between L and W:

W(W+15)=A

We can set up the second equation using the information in the second sentence:

(W-2)(W+13)=A-106

Now we can plug the first equation, already isolated for A, into the second equation and solve for W:

(W-2)(W+13)=W(W+15)-106\\W^2+11W-26=W^2+15W-106\\4W=80\\W=20

A pretty nasty-looking equation actually becomes pretty easy to solve. We know the length is 15ft greater than the width, so if W=20, L=35.

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3 years ago
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34kurt

Answer:

1095

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3 years ago
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Sherman goes golfing every 6th day and Brad goes golfing every 7th day. If Sherman and Brad both went golfing today, how many da
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Question 9 20% of a particular brand of light bulbs fail in one year. What is the probability that three bulbs out of a random c
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Answer:

The correct answer is 0.15

Step-by-step explanation:

According to the given scenario, the probability is as follows:

X\sim Bin (n,p)

Here

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Now this is a binomial probability distribution

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= 0.15

Hence, the correct answer is 0.15

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2 years ago
Is 2/3 greater than 8/12
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2/3 is exactly the same as 8/12
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