Mathematics, 20.03.2020 03:17 ashleyallred3299

20 G is the center of the small circle. Point x is the center of the large Circle. Point g h and X are on the line segment GX what would be the area of a new circle that has line segment GX as its diameter 16π cm² 36π cm² 49π cm² and 98π cm²

20 G is the center of the small circle. Point x is the center of the large Circle. Point g h and X a

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Answer from: turtlesage21

$A=49\pi\ cm^2$

Step-by-step explanation:

we know that

The area of a circle is equal to

$A=\pi r^{2}$

The radius of the new circle is equal to

$r=\frac{GX}{2}=\frac{8+6}{2}=7\ cm$ ---> the radius is half the diameter

substitute

$A=\pi (7)^{2}$

$A=49\pi\ cm^2$

Answer from: Quest

the range of a function is the range of y-values for which it is defined, or exists. given that we are only looking at the y-values, we can already discount the first two answers as they deal with the domain of the function (range of x-values).

now, what we need to do is find the smallest and highest y-values for which the function is defined. if you'd like, you could take a ruler and start at the very bottom of the graph, find the lowest point, then move the ruler higher and higher until you reach the highest point. doing so either in your head or with an actual ruler, we can see that the lowest y-value is -5 and the highest y-value is -1.

the question now remains as to whether they are included in the range (fourth answer) or excluded (third answer). the key here is to recognise whether they are marked with an open or a closed circle. since both (-2, -5) and (2, -1) are marked with a closed circle, they are points that exist on the graph and are thus included in the range (note that if they were marked with an open circle like (4, -2) then that would signify that there is a break in the graph at that point).

thus, the fourth answer, (y | -5 ≤ y ≤ -1), is correct.

also note that usually it is good practice to scan your eye inbetween the highest and lowest point for any breaks in the graph - we do have one here at (4, -2), however -2 is still included in the range because there is another point that is included in the graph with the same y-value, ie. point (1, -2).

i hope that but if you require any further explanation don't hesitate to comment below.

Me if you can and if you finished this lesson on edg- comment you.

Answer from: Quest

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation:

Which are the possible side lengths of a triangle?

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