Answer:
a. True
Explanation:
Metals are amazing, and they are all around us. You can probably easily identify them by their shiny surfaces and tinny sound when you tap them.
Generally, metals are mainly hard, shiny, and can be hammered into thin sheets. Also, another property of a metal is that, it is a good conductor of heat and even electricity because there valence (outer) electrons are delocalized. Some examples of chemical elements that are metals are iron, gold, sodium, silver, copper etc.
Answer:
![CPD = 80](https://tex.z-dn.net/?f=CPD%20%3D%2080)
![PCD = 44](https://tex.z-dn.net/?f=PCD%20%3D%2044)
Explanation:
Given
![AB || CD](https://tex.z-dn.net/?f=AB%20%7C%7C%20CD)
![BAD = 56](https://tex.z-dn.net/?f=BAD%20%3D%2056)
![CPA = 100](https://tex.z-dn.net/?f=CPA%20%3D%20100)
See attachment
Required
Determine PCD and CPD
First, we need to calculate CPD
Since DPA is a straight line and CPA = 100;
We have that:
--- angle on a straight theorem
Substitute 100 for CPA
![100 + CPD = 180](https://tex.z-dn.net/?f=100%20%2B%20CPD%20%3D%20180)
Subtract 100 from both sides
![100-100 + CPD = 180-100](https://tex.z-dn.net/?f=100-100%20%2B%20CPD%20%3D%20180-100)
![CPD = 80](https://tex.z-dn.net/?f=CPD%20%3D%2080)
Next, we calculate PCD
We have that:
--alternate angle
In triangle PCD
--- angles in a triangle
Where
![PDC = ADC = 56](https://tex.z-dn.net/?f=PDC%20%3D%20ADC%20%3D%2056)
So, we have:
![PCD +80 + 56 = 180](https://tex.z-dn.net/?f=PCD%20%2B80%20%2B%2056%20%3D%20180)
![PCD +136 = 180](https://tex.z-dn.net/?f=PCD%20%2B136%20%3D%20180)
Subtract 136 from both sides
![PCD = 180 - 136](https://tex.z-dn.net/?f=PCD%20%3D%20180%20-%20136)
![PCD = 44](https://tex.z-dn.net/?f=PCD%20%3D%2044)
Answer:
B
Explanation
Because you put baking soda first then vinegar which makes it bubble and rise hope this helps