Answer:
Step-by-step explanation:
To solve exponential equations with same base, use the property of equality of exponential functions . If b is a positive number other than 1 , then bx=by if and only if x=y . In other words, if the bases are the same, then the exponents must be equal.
Answer:
(1, -8)
y= -8
x= 1
Step-by-step explanation:
7x-3y= 31
7x+y= -1
solve the equation
7x-3y=31
7x= -1-y
substitute the value of 7x into an equation
-1-y-3y=31
subtract -y to -3y
-1-4y=31
add both sides by 1
-4y=32
divide both sides by -4
y= -8
substitute the value of y into an equation
7x= -1-(-8)
distribute
7x=7
divide both sides by 7
x=1
(1, -8)
I believe it's all correct.
This is a no solution equation.
HOPE THIS HELPS!
Answer:
The last one
Step-by-step explanation:
when you are dividing an equation with exponents, you subtract the exponents from each other.
For example, in your problem you have d^4 and d^2 (notice that they have the same base) you subtract the exponents to get d^2
** even if the bases are numbers, you DONT touch the base, just the exponents ( ex.: 5^4 ÷ 5^3 = 5^1)
Do this w/ the rest of the exponents.
d^4 ÷ d^2 = d^2
e^3÷e^2= e
f^5÷f= f^4
** although f looks like it doesn't have an exponent, it has an invisible one
And w/ the power of deduction, you should get -2/3 d^2ef^4
