Lets reorder the equations
y = x - 1 (1)
y = x +1 (2)
Since both lines have the same slope (m = 1), then this is an inconsistent system with NO solution
Answer:
it's 20m² I think or it's 28m²
Answer: option c. She subtracted the coefficients instead of dividing them
Explanation:
1) Starting expression (given):
2) Simplified expression (given)
3) Note that if you do the operations correctly you get:
i) By dividing the coefficients:
ii) By subtracting the exponents
And that is the correct result.
4) But if you subtract the coefficients, instead of dividing them, then you get 10 - ( - 5) = 10 + 5 = 15
Which is what she obtained in the numerator. And this is wrong, because the coefficients must be divided.
It is the exponents what you subtract, as per the rule of quotient of powers.
Answer:
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Final Interest Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have
<em>Sandra</em>
substitute in the formula above
solve for r
Convert to percentage form
<em>Ron</em>
substitute in the formula of interest