A) Frederick Griffith
B) Alfred Hershey and Martha Chase
C) Oswald Avery, Maclyn McCarty, and Colin MacLeod
The first I think I am not so sure
The sum of the two numbers is equal to 70.
- Let the first number be x.
- Let the second number be y.
In this exercise, you're required to find two numbers by translating the word problem into an algebraic expression and then solving for the unknown variables (x and y).
Translating the word problem into an algebraic expression, we have;
Two numbers differ by 8:
....equation 1.
The product of the two numbers is 713:
....equation 2.
To calculate the sum of the two numbers:
First of all, we would solve for each of the unknown variables (x and y).
From eqn. 1, we have:
....equation 3.
Substituting eqn. 3 into eqn. 2, we have:
![y(y+8)=713\\\\y^2+8y=713\\\\y^2+8y-713=0](https://tex.z-dn.net/?f=y%28y%2B8%29%3D713%5C%5C%5C%5Cy%5E2%2B8y%3D713%5C%5C%5C%5Cy%5E2%2B8y-713%3D0)
Solving the quadratic equation by factorization, we have:
![y^2-31y +23y-713=0\\\\y(y-31)+23(y-31)=0\\\\(y+23)(y-31)=0](https://tex.z-dn.net/?f=y%5E2-31y%20%2B23y-713%3D0%5C%5C%5C%5Cy%28y-31%29%2B23%28y-31%29%3D0%5C%5C%5C%5C%28y%2B23%29%28y-31%29%3D0)
y = -23 or 31.
For the value of x, when y = 31:
![x=8+31](https://tex.z-dn.net/?f=x%3D8%2B31)
x = 39
Now, we can calculate the sum of the two numbers:
![x+y=39+31=70](https://tex.z-dn.net/?f=x%2By%3D39%2B31%3D70)
Read more on word problems here: brainly.com/question/13170908
The formula weight of
is equal to 136.02 g/mol.
The formula weight of a chemical compound is calculated by adding the atomic masses of each chemical element contained in the compound, while multiplying them by the number of atoms respectively.
From the periodic table, the atomic mass of each chemical element is:
Formula weight of
= ![12.0107 + [14.0067+ (15.999 \times3)]\times 2](https://tex.z-dn.net/?f=12.0107%20%2B%20%5B14.0067%2B%20%2815.999%20%5Ctimes3%29%5D%5Ctimes%202)
![F = 12.0107 + [14.0067+ 47.997] \times 2\\\\F = 12.0107 + 124.0074](https://tex.z-dn.net/?f=F%20%3D%2012.0107%20%2B%20%5B14.0067%2B%2047.997%5D%20%5Ctimes%202%5C%5C%5C%5CF%20%3D%20%2012.0107%20%2B%20124.0074)
F = 136.02 g/mol.
Read more: brainly.com/question/21280037
Could you provide more information? Shock absorbers simply take the shock from the road so it doesn’t transfer to the cab of a vehicle.