Answer:
Step-by-step explanation:
3y = -2x - 5
y = -2/3x - 5/3
perp: 3/2
y - 1 = 3/2(x + 6)
y - 1 = 3/2x + 9
y = 3/2x + 10
Answer:
the median is 43
Step-by-step explanation:
You should write a ( real world situation ) question that can only have whole numbers as a solution because you would divide and then you can not have a fraction left over so instead you add one. For instance there are 132 students going on a field trip. 20 students can fit on each bus. how many buses are needed? 7 because when you divide 132 by 20 you get 6 remainder 12. You can not just make 12 students walk to the location so you would add an extra bus.
Hopes this helps if right please mark as brainlist:
Answer: -12x^2 + 15x
X + y = 20 --> eqn 1
The second equation would be the mass balance shown below:
(x)(0.40) + y(0.70) = 20(0.52) --> eqn 2
Rearranging eqn 1,x = 20 - ySubstitute this to eqn 2:
(20 - y)(0.40) + y(0.70) = 20(0.52)Solve for y,y = 8 grams Finally, solve for x.x = 20 - 8 = 12 grams
Therefore, Serena needs 12 grams of the 40% solution and 8 grams of the 70% solution.
