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Anvisha [2.4K]
2 years ago
12

Write an equation for the graph shown

Mathematics
1 answer:
Dimas [21]2 years ago
3 0
It is number 3. Have a good day.
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Sales tax on an item is directly proportional to the cost of the item purchased. If the tax on a $500 item is $30, what is the s
Archy [21]
30 / 500 = x / 900....$ 30 tax / 500 item = $ x tax on 900 item
cross multiply
(500)(x) = (900)(30)
500x = 27000
x = 27000/500
x = 54 <===
6 0
3 years ago
Read 2 more answers
PLEASE HELP
katovenus [111]

<u>Answer:</u>

$593.26

<u>Step-by-step explanation:</u>

We know that the price of the laptop is $2500 and each year its resale value decreases by 25%. It means that 100 - 25 = 75% of the value is retained every year for the resale.

So, the resale value for 1st year = \frac{75}{100} *2500 = $1875

for 2nd year =  \frac{75}{100} *1875 = $1406.25

for 3rd year =  \frac{75}{100} *1406.25 = $1054.7

for 4th year =  \frac{75}{100} *1054.7 = $791.01

for 5th year =  \frac{75}{100} *791.01 = $593.25

Or we can use the following formula to find its resale value after 5 years:

2500*(0.75)^5 = $593.26

4 0
3 years ago
4.48 Same observation, difference sample size: Suppose you conduct a hypothesis test based on a sample where the sample size is
Lemur [1.5K]

Answer:

P-value is lesser in the case when n = 500.

Step-by-step explanation:

The formula for z-test statistic can be written as

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n} } } =\frac{(x-\mu)\sqrt{n}}{\sigma}

here, μ = mean

σ= standard deviation, n= sample size, x= variable.

From the relation we can clearly observe that n is directly proportional to test statistic. Thus, as the value of n increases the corresponding test statistic value also increases.

We can also observe that as the test statistic's numerical value increases it is more likely to go into rejection region or in other words its P-value decreases.

Now, for  first case when our n is 50 we will have a relatively low chance of accurately representing the population compared to the case when n= 500. Therefore,  the P-value will be lesser in the case when n = 500.

6 0
2 years ago
out of every 100£ that Judy earns at her part-time job, she saves 25£ for college. The amount she saves is directly proportional
poizon [28]

Answer: 970

Step-by-step explanation:

3,880 divided by 100= 38.8*25=970

5 0
3 years ago
Use the graph to answer the question. On a coordinate plane, a curve starts at (negative 1, negative 1) and curves down through
Softa [21]

Answer:

A, C, and E

Step-by-step explanation:

-2, 0, and 5

5 0
3 years ago
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