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xxMikexx [17]
3 years ago
9

Original shirt cost: $55

Mathematics
2 answers:
Cloud [144]3 years ago
7 0
Answer:

Original cost = $55
Current price = $40
Decrease in price = 40-55 = -$15
Percentage decrease = [(New price - old price)/ old price] *100
Percentage decrease =
(40-55)/55] *100
= -0.272727 *100
= -27.27%
To a whole percentage = 27%
Therefore, the cost of the t-shirt decreased by 27%

Explanation:

It is 27
JulijaS [17]3 years ago
5 0

Answer:

15%

Step-by-step explanation:

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What would be the answer to both?
dezoksy [38]

Answer:

f(- 3) = 51, g(2) = - 11

Step-by-step explanation:

To evaluate f(- 3), substitute x = - 3 into f(x), that is

f(- 3) = - 2(- 3)³ - 3 = - 2(- 27) - 3 =  54 - 3 = 51

Similarly for g(2)

g(2) = - 5(2) - 1 = - 10 - 1 = - 11

6 0
3 years ago
I need your help on these questions. Please explain each of them. Thank you for your support
kodGreya [7K]

Answer:

Gemma

9 X 150 = 1350

61000/100 X 2 =1220

add together $2570

Fred

14350/100x2=287

200 + 287 = $487

Erik

4 X 160 = 640

153000/100 X 2.5 = 3825

3825 + 640 = $4465

Allison

510000/100x0.5 = $2550

4 0
3 years ago
If f(x) =4x^2 + 1 and g(x) =x2 -5, find (f+g)(x)
Lilit [14]

The value of (f+g)(x) is 5 x^{2}-4

Explanation:

Given that the functions f(x)=4 x^{2}+1 and g(x)=x^{2}-5

We need to determine the value of (f+g)(x)

The value of (f+g)(x) can be determined by substituting the value of f(x) and g(x) and simplifying the terms.

Thus, let us assign f(x)=4 x^{2}+1 in the function (f+g)(x), we have,

4 x^{2}+1+g(x)

Now, let us assign g(x)=x^{2}-5 in the function (f+g)(x), we get,

4 x^{2}+1+x^{2}-5

Grouping the like terms, we have,

4 x^{2}+x^{2}+1-5

Adding the like terms, we get,

5 x^{2}-4

Hence, the value of (f+g)(x) is 5 x^{2}-4

3 0
3 years ago
The population of a city has been increasing by 2% annually. In 2000, the population was 315,000. Predict the population of the
Minchanka [31]

Answer:

The population of the city in 2020 is 3,839,832

Step-by-step explanation:

Given:

Population at 2000 =  315,000

Rate at which the population increases = 2%

To Find:

The Population in the city after 2020 = ?

Solution:

The population in the city after 2020 can be found by using Exponential growth function.

Exponential growth occurs when a quantity increases by the same factor

Exponential growth function is y = a(1 + r)^t

Where

y is the final amount

a is the initial amount

r is the rate of  increase

t is the time period.

Now substituting the values ,

In 2020 i.e., after 10 years

y = 315000(1 + 2 \%)^{10}

y = 315000(1 + \frac{2}{100})^{10}

y = 315000(1 + 0.02)^{10}

y = 315000(1.02)^{10}

y = 315000\times 1.218

y = 3,839,832.42

4 0
3 years ago
Aria studied the traffic trends in India. She found that the number of cars on the road increases by 10% each year. If there wer
denpristay [2]

Answer:

8,800,000cars

Step-by-step explanation:

Given the initial amount of cars = 80,000,000

If there is 10 % increase in the first year;

Increment = 10% of 80,000,000

Increment = 0.1 * 80,000,000

Increment = 8,000,000

Amount of car in year 2 = 80million + 8million = 88million

Year3;

Amount of car in year 3 = 88,000,000+(10%of88million)

Amount of car in year 3 = 88,000,000+8,800,000

Amount of car in year 3 =96,800,000

Differences in the number of cars = 96,800,000 - 88,000,000

Differences in the number of cars = 8,800,000cars

<em>Hence there are 8,800,000cars in years 3 than year 2</em>

7 0
3 years ago
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