1y + 2x = 0 ⇒ -2x - 1y = 0
4x + 1y = 3 ⇒ <u>4x + 1y = 3</u>
<u>2x</u> = <u>3</u>
2 2
x = 1.5
4(1.5) + y = 3
6 + y = 3
<u>- 6 - 6</u>
y = -3
(x, y) = (1.5, -3)
Answer:
9 - 11i
Step-by-step explanation:
(3 - 9i) + (6 - 2i)
= (3 + 6) + (-9i - 2i)
= 9 - 11i
1/8 = 0.125
0.125 * 5 = 0.625
Ms. Taylor will need 625/1000 teaspoon of salt for 5 batches.
2x+40=3x-85
2x-3x+40=3x-3x-85
-x+40=-85
-x+40-40=-85-40
-x=-125
Multiply by -1 to get positive x and for -125
(-1)(-x)=(-125)(-1)
x=125
Check answer by using substitution method
2(125)+40=3(125)-85
250+40=375-85
290=290
Answer is x=125