Answer:
The solution set is {-2, 3}.
Step-by-step explanation:
We can do this by elimination after manipulating the 2 equations so that the coefficients of y will disappear after addition:
5x - 2y = -16 Multiply this by -5:
-25x + 10y = 80 ...........(A)
4x - 5y = -23 Multiply this by 2:
8x - 10y = -46..............(B)
Now add A and B:
-17x = 34
x = 34/-17
<u>x = -2</u>.
Now substitute x = -2 into the first original equation:
5(-2) - 2y = -16
-2y = -16 +10 = -6
y = -6/-2
<u>y = 3</u>.
Confirm these results by substitution in the second original equation:
4(-2) - 5(3)
= - 8 - 15 = -23.
Checks OK.
I believe that expression would be in the form
ax²+bx +c where, c is the constant term
For example; in the expression;
2x²+3x²+7 , 7 is the constant term.
Answer:
he is seven years older.... and is currently 2x older
Step-by-step explanation:
7x2=14
Answer:
Root square 25² - 15² = 20
Area = 20×15 = 300 cm²
Can u add me as Brainest pls?
Answer:
B
Step-by-step explanation:
