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irina [24]
4 years ago
8

Can someone kindly answer number 4?

Mathematics
1 answer:
ch4aika [34]4 years ago
5 0
X = list price = price before discount

15% is the discount, ie, we take 15% of x and subtract it off the original price

final price = (original price) - (15% of original price)
final price = x - 15% of x
final price = x - 0.15x
final price = 0.85x

The final price (or sale price) is $722.50, therefore

0.85x = 722.50
0.85x<span>/0.85</span> = 722.50/0.85
x = 850

The laptop was originally $850

Final Answer: 850
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PLEASE HELP ASAP
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The value k needed for the transformation of f(x) to g(x) = f(k · x) is equal to 3.056.

<h3>How to find the find the dilation factor</h3>

In this problem we have the following relationship bewteen the two <em>quadratic</em> equations: g(x) = f(k · x), which means that for all y the following relationship between f(x) and g(x):

k = \frac{x_{g}}{x_{f}}

Let suppose that y = 3, then x_{f} = - 5.5 and x_{g} = - 1.8, then the value k is:

k = (- 5.5)/(- 1.8)

k = 3.056

The value k needed for the transformation of f(x) to g(x) = f(k · x) is equal to 3.056.

To learn more on transformations: brainly.com/question/11709244

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4 0
2 years ago
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Buses to acton leave a bus station every 24 minutes. Buses to barton leave the same bus station every 20 minutes. A bus to acton
Annette [7]

Answer: 11a.m

Step-by-step explanation:

Here is the complete question:

Buses to Acton leave a bus station every 24 minutes. Buses to Barton leave the same bus station every 20 minutes. A bus to Acton and a bus to Barton both leave the bus station at 9 00 am. When will a bus to Acton and a bus to Barton next leave the bus station at the same time?

For us to solve this, we have to find the least common multiple of 24 and 20 which is finding the multiples of 20 and 24.

20 = 20,40,60,80,100,120

24= 24,48,72,96,120

The least common multiple of 20 and 24 is 120min. Since 60 minutes make 1 hour, 120 minutes will be 2 hours.

Since they both leave at 9a.m. The next bus will leave at:

9am + 2hours = 11am

7 0
3 years ago
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