Answer:
1.375
Step-by-step explanation:
Hope this helps :)
El conjugado de a+bi es a-bi (<span>invierta el signo de la parte imaginaria)
</span>
<span>por lo tanto
</span><span>El conjugado de 3+4i es 3-4i,
</span><span>El conjugado de 6-i es 6+i</span>
Answer:
2.5 gal would have to be replaced with 100% bleach to get the right concentration.
Step-by-step explanation:
If we drain X gal from the tank and we replace it with X gal of 100% bleach we will have in the tank: 80-X gal of 4% bleach and X gal of 100% bleach.
We can calculate the final concentration of the solution using a weighted average of the volumens where the weights are going to be the concentrations of each one:
(7%)×(80) = (4%)×(80-X) + (100%)×(X)
560 = 320-4X+100X
240 = 96X
X=2.5 gal
Answer:
The answer is 8384. You may have have miscalculated when completing it on paper. Hope this helps :)
