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3 years ago

Fórmula para sacar el área de un circulo

Mathematics

1 answer:

saul85 [17]3 years ago

8 0

<span>Fórmula para sacar el área de un circulo:

$A = \pi r^2$
</span>

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mittens are marked down 25% the sale price is 3.15 a pair what was the original price of a pair of mittens

Sliva [168]

$12.6 -- 25% of 12.6 is exactly $3.15

I did this by taking 3.15 / 0.25

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3 years ago

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Create a model showing 80% of 300

Vinil7 [7]

I made this graph for you- the red is the 80%, and the green is the leftover 20%.

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3 years ago

Estimate the value of 102. ÷ 4.7

Maksim231197 [3]

Answer:

21.7

Step-by-step explanation:

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2 years ago

What is x^2 + y^2 - 4x + 12y -20= 0 factored

andrew11 [14]

<span>Simplifying
4x2 + 8xy + 4y2

Reorder the terms:
8xy + 4x2 + 4y2

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3 years ago

The number of views on an interesting video after it's uploaded is represented by the following table:

defon

Answer:

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data is $,V(t)=50(6.25)^t$

Step-by-step explanation:

Time (months) Views

0 50

2 313

4 1950

6 12,210

8 76,300

10 476,800

$(x_1,y_1)=(0,50)\\(x_2,y_2)=(2,313)\\(x_3,y_3)=(4,1950)$

$Slope = \frac{y_2-y_1}{x_2-x_1}$

$Slope = \frac{313-50}{2-0}$

Slope =131.5

$Slope = \frac{y_3-y_2}{x_3-x_2}$

$Slope = \frac{1950-313}{4-2}$

Slope =818.5

Since the slope is not same . So, it is not a linear relationship

$\frac{y_2}{y_1}=\frac{313}{50}=6.25\\\frac{y_3}{y_2}=\frac{1950}{313}=6.25$

Since the ratio between the consecutive outputs is same so, it is exponential relationship.

Formula : $y=ab^t$

Where a is the initial value = 50

b = rate of change = 6.25

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data

So $,V(t)=50(6.25)^t$

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3 years ago