Target concentration = 20%.
Ratio of 12% and 30% alcohols needed
30-20 : 20-12 = 10:8 = 5:4
Volume of 12% = 72 mL * (5/(5+4)) = 40 mL
Volume of 30% = 72 mL *(4/(5+4)) = 32 mL
Total = 40+32 = 72 mL of 20%
The answer (if I did it right) is 490. you would do what is in the parentheses first and then subtract the two.
The area of a parallelogram is the product of the length of the base and the height measured perpendicular to the base.
1i) (20 cm)*(12 cm) = 240 cm^2
2ii) (7 cm)*(7.5 cm) = 52.5 cm^2
3iii) 27 cm^2 = (6 cm)*h
.. h = (27 cm^2)/(6 cm) = 4.5 cm
Answer:
213 points
The y-intercept is how many points Jackson already scored, and the slope is how many points he is scoring every game.
Step-by-step explanation:
Jackson earns 28 points per game, so after 6 games, he earns 168 points (just multiply 6 by 28). He already scored 45 points, so if you add them together, he scored a total of 213 points.
The y-intercept is 45, what he already scored, and the slope is 28, how many points he scores per game.
Hope I helped!!!