Answer:
-5
Step-by-step explanation:
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Answer:
I think 720 would be the right answer!!
Answer:
1 ,2, and 3
Step-by-step explanation:
Jorge's weight percent decrease is (190-180)÷190, or <u><em>amount of change/original amount</em></u>. Simplified, 10÷190=5.2637157894...%, approximately equal to 5%. The first option is correct. Marie's percent decrease is (175-150)÷175. Simplified, that is 25÷175=14.2857142857...%, which is about 14%. The second option is correct. Clearly, we can tell that Marie had the greater percent change, about 14% to about 5%. Also clearly, Jorge did not have the greater percent change, so we can tell Option 4 is wrong. We already know that Jorge's change is about 5% and Marie's is about 14%, so they can't be about 0.5% or about 1.4%. Options 5 and 6 are incorrect. The correct answers are 1, 2, and 3.
Hope this helps and it's not too long! (P.S. I got it right on Edgen.)
Cramer's rule tells you that the value of x in the system of equations
is given by
In matrix terms, this is the determinant of the coefficient matrix with the right-side constants replacing the x-coefficients divided by the determinant of the matrix of coefficients. The value of y can be found by doing similar math with the numerator being the determinant of the coefficient matrix with the right-side constants replacing the y-coefficients. For systems of higher dimension, the column of right-side coefficients replaces each column of variable coefficients in turn.
For your equations, this evaluates to
Answer:
the number of hours taken is 2
Step-by-step explanation:
The computation of the number of hours taken is shown below:
As we know that
Distance = travel time × speed
The Guillermo to catch Dorabella be t = T
So the equations would be
9T = 4 + 7T
9T - 7T = 4
2T = 4
T = 2 hours
hence, the number of hours taken is 2
