Answer:
-8x^2+6x-20
Step-by-step explanation:
2(x^2+3x)-10(x^2+2)
2x^2+6x-10x^2-20
(2x^2-10x^2)+6x-20
-8x^2+6x-20
It would be a conjunction
Answer:
it should be the negative repirocal of -2 so 1/2
5 liters (L) of 30% bleach solution contains 0.3×(5 L) = 1.5 L of bleach.
3 L of 50% bleach contains 0.5×(3 L) = 1.5 L of bleach, too.
Combined, you would have 8 L of solution containing 1.5 L + 1.5 L = 3 L of bleach, so the concentration of bleach is
(3 L) / (8 L) = 0.375 = 37.5%