What is cos^2x (sec^2x - 1)
1 answer:
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Answer:
See explanation
Step-by-step explanation:
The constant of variation is found using the slope formula:
The given relation is
X : -2 , -3, -4, -5
Y : -5, -7.5,-10,-12.5
We can use any two ordered pair to find the constant of variation.
Using (-2,-5) and (-3,-7.5), we have
The constant of variation is 2.5
We need to repeat this for all the options to identify the one with -2.5 as slope.
unfortunately, you did not provide the remaining options.
Use ratios.
AC is in the same place as XZ.
Put them over each other. Put two ther sides over each other. In this case, we don't know the side that goes with AB so we're trying to find it.
Cross multiply. (Bottom 14 by the twelve divided by the top 14.)
You get 12. Side XY is 12.
Normally, you'd do the same to find side BC, but it's already obvious the sides equal each other. BC = 10
Add ABC's sides to find the perimeter.
Your answer is 36.
Hope this helps!
:)
AC is in the same place as XZ.
Put them over each other. Put two ther sides over each other. In this case, we don't know the side that goes with AB so we're trying to find it.
Cross multiply. (Bottom 14 by the twelve divided by the top 14.)
You get 12. Side XY is 12.
Normally, you'd do the same to find side BC, but it's already obvious the sides equal each other. BC = 10
Add ABC's sides to find the perimeter.
Your answer is 36.
Hope this helps!
:)