Answer:
50 degree
Step-by-step explanation:
the angle sum property of the equilateral triangle is =180 degree
since, 52 degree +78 degree +x =180 degree
130 degree + x =180 degree
x= (180-130) degree
<h3> x= 50 degree</h3>
hope this helps you out
The half life of the substance is 6.92 days.
<h3>What is the Half life ?</h3>
Half life can be defined as the time required to reduce the concentration to half of its initial value.
Here the equation given is
![\rm N = N_o e^{-kt}](https://tex.z-dn.net/?f=%5Crm%20N%20%3D%20N_o%20e%5E%7B-kt%7D)
The concentration will reduce to half therefore
![\rm N= \dfrac{N_o}{2}](https://tex.z-dn.net/?f=%5Crm%20%20%20N%3D%20%5Cdfrac%7BN_o%7D%7B2%7D)
so,
![\rm 39/2 = 39 e^{- 0.1001 * t_{1/2}}](https://tex.z-dn.net/?f=%5Crm%2039%2F2%20%3D%2039%20%20e%5E%7B-%200.1001%20%2A%20t_%7B1%2F2%7D%7D)
ln 0.5 = - 0.1001 * t(1/2)
-0.693 = -.1001 * t(1/2)
t(1/2) = 6.92 days.
Therefore the half life of the substance is 6.92 days.
To know more about Half Life
brainly.com/question/24710827
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Answer: (x=+17)
Step-by-step explanation:
x+35=3x+1
We move all terms to the left:
x+35-(3x+1)=0
We get rid of parentheses
x-3x-1+35=0
We add all the numbers together, and all the variables
-2x+34=0
We move all terms containing x to the left, all other terms to the right
-2x=-34
x=-34/-2
x=+17
Answer:
a: ![5\left(2p-7\right)](https://tex.z-dn.net/?f=5%5Cleft%282p-7%5Cright%29)
Step-by-step explanation:
![10p-35](https://tex.z-dn.net/?f=10p-35)
![5* \:2p-5* \:7](https://tex.z-dn.net/?f=5%2A%20%5C%3A2p-5%2A%20%5C%3A7)
![5\left(2p-7\right)](https://tex.z-dn.net/?f=5%5Cleft%282p-7%5Cright%29)