The equation 0 = -2x2 5x - 3 was the quadratic formula that Zacharias used. However, he started substituting as:
Quadratic formula as x = ; substitution as x
The errors he made: he mistakenly used the negative (-) and postive (+)
* -5 should have been 5
* 52 should have been -52
* both the numerator and the denominator should have been -2 instead of 2
Answer:
After 15 years the use of said machine is no longer profitable
Step-by-step explanation:
it should be used, as long as the money generated is not smaller as the costs generated. By setting both formulas equal (calculating the x value for when they are equal) you get x = 15 and x = -2.5(which doesnt make sense in this context).
Answer:
1/36
Step-by-step explanation:
Exponentiation: 1/6 ^ 2 = 12/62 = 1/36
The salesperson earns a commission of $391
The total amount of merchandise that he sold is $2300
The commission rate is given by
To convert the rate into percentage, multiply with 100%
Therefore, the commission rate is 17%.
Answer:
The answer is 1.2
Step-by-step explanation:
u add 2.2 and 1.2 which you get 3.4. The difference is 1.2.
