Answer:
n=-6
Step-by-step explanation:
2n + 10 = -2
2n=-12
n=-6
Hope this helps!
If not I'm sorry.
Answer:
n² + 1
Step-by-step explanation:
Sequence = 2 , 5 , 10 , 17 , 26
1st difference = 3 , 5 , 7 , 9
2nd difference = 2 , 2 , 2
n² + ? = 2 , 5 , 10 , 17 , 26
I think the answer is 31.75
Answer:
2.5L of 10% salt solution and 7.5L of the 30% salt solution
Step-by-step explanation:
let the amount of L in the 10% solution be 'x'
let the amount of L in the 30% solution be '10-x'
* because they add up to a total of 10L
10%(x) + 30%(10-x) = 25%(10)
0.1x + 3 - 0.3x = 2.5
-0.2x = -0.5
x = 2.5
x =2.5
10-x = 7.5
2.5 of 10% solution and 7.5% of 30% solution