Answer:
Answer key for quiz chose triangle sum theorem got it wrong at least we know that's not it
Explanation:
answer key for rest of quiz 1 CPCTC
2 6 cm
3 13 in
4 80 cm
5 wrong
6 40
7 26 m
8 4 in
9 9 cm
10 105
Exactly 80 liters of 20% are needed.
Let quantity of 20% alcohol solution be added : x liters
Here is the work:
> x*20% + 40 * 50% = (x+40) * 30%
> x*0.2 + 40*0.5 = (x+40)*0.3 ..(converting percentages into decimal)
> 0.2x + 20 = 0.3x + 12
> 20-12 = 0.3x - 0.2x (Rearranging similar terms)
> 8 = 0.1 x
Hence x = 8/0.1
Ans 80 Litres
Answer:
omg i remember singing this noglista :))
Explanation:
