Answer:
-7 and -8
Step-by-step explanation:
Generally with this kind of problem it is helpful to construct equations representing the words.
Let's let:
Lesser integer = X
Greater integer = Y
The integers are consecutive, meaning that they are only one integer (number) apart. So,
Y = X+1
From the problem, we know that
Y = 9 + 2X
Now, we can sub in the equation from above.
(X + 1) = 9 + 2X
We now solve for X:
1 - 9 = 2X - X
-8 = X
Y = -8 + 1
Y = -7
3X - 4Y = 9
-3X + 2Y = 9
first step is try to get rid of one of the variables and solve for the other one. In this example you dont need to manipulate the equations to get one variable to cancel.
the x term cancels out. add both equations
-2y = 18
y= - 9
now we plug the y term back into an original equation and solve for x
3x - 4(-9)=9
3x=-27
x=-9
hope that helps
Answer:
Yes! You can
Step-by-step explanation:
1. If this is rows and columns it is doable, however if you are speaking columns by rows it isn't
2. You multiply them like normal except when you reach the end on your 2x2 matrix you repeat the cycle
3. http://www.calcul.com/show/calculator/matrix-multiplication_;2;2;2;3 there's a link to check your answer after you've done it
4
Answer:
the answer is 180
Step-by-step explanation:
