Because CD is the perpendicular bisector of AB, this means that AB is divided into two equal parts. So, AD = DB.
AD = 6x - 2 and DB = 2x + 18, so:
6x - 2 = 2x + 18
We can use algebra to solve for x.
Adding 2 to both sides gives you
6x = 2x + 20
Subtracting 2x from both sides gives you
4x = 20
Dividing by 4 on both sides gives you
x = 5
And there's your solution.
Since perimeter is adding all sides together, you will get
7 + 7 + w + w
= 14 + 2w
So the answer is B
Hope this helps
![\frac{63}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7B63%7D%7B100%7D%20)
this is the simplest form
When using GeoGebra, I'm getting the regression curve to be roughly
h(t) = 1.67*(1.4)^t
I'm not sure how your teacher got 1.64 instead of the 1.67, but it's fairly close. So it seems like choice B is the best answer for the first part.
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Once we know the regression equation, we plug in t = 14 to find that,
h(t) = 1.64*(1.4)^t
h(14) = 1.64*(1.4)^(14)
h(14) = 182.236911939151
h(14) = 182.2
If 14 days have gone by, then we estimate the height is roughly 182.2 inches.
Compared to what the table says, which is 190 inches, we see that we have an underestimate. The error is about 190-182.2 = 7.8 which is under 10.
Answer: Choice C
The model <u>under-predicts</u> the actual height by <u>less than 10 inches</u>
Answer:
Step-by-step explanation:
<h3>Given</h3>
<u>The equation for simple interest:</u>
<u>And values</u>
<h3>Solution</h3>
<u>Interest amount is</u>
<u>Solving for annual interest rate</u>
- 160 = 2000*2r
- 160 = 4000r
- r = 160/4000
- r = 0.04
- 0.04*100% = 4%
Annual interest rate is 4%