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3 years ago

I need help ASAP !!!!

Mathematics

2 answers:

jenyasd209 [6]3 years ago

5 0

Answer:

$530.66$ $ft^2$

Step-by-step explanation:

Use the formula for the area of a circle:

$A=\pi r^2$

Insert the values:

$A=3.14*13^2$

Simplify exponents $(x^2=x*x)$ :

$A=3.14*169$

Simplify multiplication:

$A=530.66$

The area of the circle is about $530.66$ $ft^2$ .

Done :D

Lostsunrise [7]3 years ago

3 0

Answer:

530.66 square feet

Step-by-step explanation:

The formula for the area of a circle is : $\pi*radius^{2}$

The radius is also half of the diameter.

To work out the area you would simply multiply pi by the radius of 13 squared, this gives you 530.66 square feet. The radius is the length from the side of the circle to the centre.

This was calculated using 3.14 as pi.

1) Multiply pi by 13 squared.

$\pi *13^{2}=530.66$

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Step-by-step explanation:

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3 years ago

Mary creates a table of values for a function and plots the points. She finds that the difference in the y values is the same. W

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Linear. When the difference of y values are the same in a function, they are linear.

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3 years ago

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F(x)=x-3 g(x)=-0.5x for what interval is the value of (f-g)(x) negative?

yarga [219]

Answer:

(-∞, 2)

Step-by-step explanation:

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$\begin{cases} f(x)=x-3\\g(x)=-0.5x \end{cases}$

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$\begin{aligned}(f-g)(x) & = f(x)-g(x)\\& = (x-3)-(-0.5x)\\& = x-3+0.5x\\& = 1.5x-3\end{aligned}$

To find the interval for which (f - g)(x) is negative, set the new function to less than zero and solve the inequality:

$\begin{aligned}(f-g)(x) & < 0\\\implies 1.5x-3 & < 0\\1.5x & < 3\\x & < \dfrac{3}{1.5}\\x & < 2\end{aligned}$

Therefore, the interval for which (f - g)(x) is negative is (-∞, 2).

Learn more about composite functions here:

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2 years ago

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andreev551 [17]

Answer:

Around 55.9

Step-by-step explanation:

The first step is to find the area of segment of the circle. Since the segment is a 90 degree angle and a total circle is 360, it is a quarter of the area of a circle. Therefore, you can find its area with the formula $\frac{1}{4}\pi r^2=49\pi$ . Now, you can find the area of the triangle inside. Since all of the radii in a circle are the same length, the triangle has two sides of length 14. Using the triangle area formula, you get an area of 14*14/2=98 square centimeters. $49\pi-98\approx 55.9$ square centimeters. Hope this helps!

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3 years ago