Hello,
A=7
Indeed
A(x²-2x)=-6
7x²-14x=-6
==>A=7 and -14=-2A==>A=7
Answer:
when (-1, -4) is substituted into the first equation it's true
when (-1, -4) is substituted into the second equation it's true
the ordered pair (-1, -4) is a solution to the systems of equation
Step-by-step explanation:
original equation
x-y=3
multiply both sides by 7
7x-7y = 21
add 7y to both sides
7x=7y + 21
substitute into second equation
(7y+21)-y=-3
simplify
6y+21=-3
subtract 21 from both sides
6y=-24
y=-4
substitute y into original equation
x-(-4) = 3
cancel out negative signs
x+4=3
subtract -4 from both sides
x=-1
Answer:
The number is 62
Step-by-step explanation:
Let the digits of the number be T and U;
A 2 digit number is represented as: 10T + U
So,
Required
Find the digit
Make U the subject in the first equation
Substitute 8 - T for U in the second
Collect Like Terms
Recall that:
<em>Hence, the number is 62</em>
Answer:
1/1 is the answer........
