Answer:
solution :
x = 4
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
5*(x-10)-(30-15*x)=0
Step by step solution :
Step 1 :
Equation at the end of step 1 :
5 • (x - 10) - (30 - 15x) = 0
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
20x - 80 = 20 • (x - 4)
Equation at the end of step 3 :
20 • (x - 4) = 0
Step 4 :
Equations which are never true :
4.1 Solve : 20 = 0
Step-by-step explanation:
Answer:
--- 1 over 5 squared
Step-by-step explanation:
When multiplying terms with a common base, you just add the exponents:
![x^a\times x^b=x^{a+ b}](https://tex.z-dn.net/?f=x%5Ea%5Ctimes%20x%5Eb%3Dx%5E%7Ba%2B%20b%7D)
That's true even when you don't have any exponents.
![5\times5=5^1\times5^1=5^{1+1}=5^2=25](https://tex.z-dn.net/?f=5%5Ctimes5%3D5%5E1%5Ctimes5%5E1%3D5%5E%7B1%2B1%7D%3D5%5E2%3D25)
![\rightarrow5^3\times5^{-5}\\\rightarrow5^{3-5}\\\rightarrow5^{-2}](https://tex.z-dn.net/?f=%5Crightarrow5%5E3%5Ctimes5%5E%7B-5%7D%5C%5C%5Crightarrow5%5E%7B3-5%7D%5C%5C%5Crightarrow5%5E%7B-2%7D)
A negative exponent isn't fully simplified, so there's another rule to use:
![x^{-y}=\frac{1}{x^y}](https://tex.z-dn.net/?f=x%5E%7B-y%7D%3D%5Cfrac%7B1%7D%7Bx%5Ey%7D)
That is '1 over x to the y' if it's too small to read.
![\rightarrow5^{-2}=\frac{1}{5^2}](https://tex.z-dn.net/?f=%5Crightarrow5%5E%7B-2%7D%3D%5Cfrac%7B1%7D%7B5%5E2%7D)
Answer:
b or 150
Step-by-step explanation:
Answer:
The answer to this is the slope=-5/7
The maximum or minimum happens when x=-b/2a
x=-1200/[2*(-6)]=100
the maximum happens when x=100