What is the circumference of circle p? Express your answer in terms of π (pi).
2 answers:
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Answer:
Step-by-step explanation:
These problems are based on triangle ratios. You cannot use the Pythagorean theorem to solve them.
The first triangle is a 45 45 90 degree triangle (I'm talking about the angles), and so, the ratio is 1:1:, so I have to divide the hypotenuse by
to get the legs. The hypotenuse is 15
, so that divided by
is 15
. X is the same length as y because of the triangle ratio, so both x and y for the first triangle are 15
.
The second triangle is a 30 60 90 degree triangle, so the ratio is x:x:2x. The short leg is 7
, so 7
* 2 is the hypotenuse, which is 14
. The long leg is 7
*
, which is 21. So, x for the second triangle is 14
, and y for the second triangle is 21.
The first graph function has a constant additive rate of change of -1/4.
From the figure:
First of all when we talk about a rate of change that means a linear relation between variables, which is proper of a linear function represented by the first function showed in the image.
In the first graph we can observe that the x variable increases and y - variable decrease.
rate of change = slope = -1/4
from first graph take any two points.
(2,1) and (-2,2)
slope = 2 - 1 / -2-2
= 1/-4
= -1/4
Learn more about the function here:
#SPJ4
Full question:
Is in the image uploaded.
